Season: 1 | 2 | 3 | 4
Year: 1957 | 1958 | 1959 | 1960


Season 1


Season 1, Episode 1: The Mickey Farmer Case

1 July 1957
No good killer Mickey Farmer is on the run. Shot and betrayed by his partner and trapped inside a building by police, Mickey has a dying request. Always loyal to a client, Diamond accepts much to the frustration of Lieutenant McGough.

David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough
Lewis Charles ... Weasel McHenry
Christopher Dark ... Mickey Farmer

Bill Erwin ... Sergeant Riker
Vic Perrin ... Smith
Virginia Stefan ... Sally Gain
Louise Arthur ... (uncredited)
Claire Kelly ... (uncredited)
Junius Matthews ... (uncredited)

Season 1, Episode 2: Custody

8 July 1957
Diamond is hired to find a little girl whose father has abducted her from her legal guardian. Diamond suspects that this isn't a family squabble over child custody when he learns that her husband is a shady importer who dabbles in diamond smuggling.

David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough
Cheryl Callaway ... Marjorie Bullock
Maura Murphy ... Jean Bullock
Gail Kobe ... Phoebe

Robert Quarry ... Arnie Bullock
Eve Miller ... Kay Wilson

David McMahon ... Inspector
Benny Rubin ... Mr. Birnbaum (uncredited)
Mark Scott ... Guard (uncredited)

Season 1, Episode 3: Escape from Oak Lane

15 July 1957
Diamond is hired to escort a beautiful wife while her husband is on a business trip. Frightened, the wife runs out on Diamond while they are dancing. Returning to her hotel room, she is drugged and kidnapped with Diamond in pursuit.

David Janssen ... Richard Diamond
Christine White ... Elaine

Jeanette Nolan ... Tesla
Hugh Brooke ... Forrest
S. John Launer ... Dr. Norton
Bert Masters ... Glenn (as Burt Masters)

Season 1, Episode 4: The Homicide Habit

22 July 1957
Diamond attempts to outwit, a beautiful widow and her boyfriend who are cashing in on the deceased husband's double-indemnity insurance. The detective tries to make them believe he saw them murder the husband.

David Janssen ... Richard Diamond
Robert Brubaker ... Larry Parker (as Bob Brubaker)

Patricia Donahue ... Mindy Parker

Peter Hansen ... Tim Wilson (as Peter Hanson)

Osa Massen ... Janet Morrisey

Season 1, Episode 5: Picture of Fear

29 July 1957
While on a fishing vacation, Diamond has a date with a beautiful woman who is being pursued by two mysterious hunters who she photographed earlier. They will stop at nothing to get the film, sensing danger Diamond offers his assistance.

David Janssen ... Richard Diamond
Judith Braun ... Nancy
James Nolan ... Carlin
George N. Neise ... Adams (as George Neise)
Robert Nelson ... Trooper (as Robert J. Nelson)

Season 1, Episode 6: Hit and Run

5 August 1957
A young couple stop at the Good Eats Casino Grill. While inside their car is stolen and used to stage a hit and run. Believing them to be innocent, Diamond arranges a hit with himself as the target but all does not go according to D's plan.

David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough
Grant Richards ... Joe Wells
Tommy Cook ... Baron
Nick Dennis ... Chico Burns

Bill Erwin ... Sgt. Riker
Dawn Richard ... Laurie Gates
Bud Slater ... Bob Winters
Dennis Moore ... Motorcycle Cop

Season 1, Episode 7: The Big Score

12 August 1957
The stakes are high when Richard Diamond goes up against a gang of con men who use a fake bookie's office as a set-up to trick wealthy suckers and make thousands of dollars. But what the con men don't count on is the fact that they, too, can be played for suckers, and that Richard Diamond is a Private Eye with a few tricks up his sleeve...

Season 1, Episode 8: The Chess Player

19 August 1957
Several attempts have been made to kill industrialist Julian Tyler. But the attempts have failed, and Tyler merely sees them as unfortunate accidents. His wife, however, hired Richard Diamond as bodyguard when Julian plans to attend an important board meeting. Diamond has to use every trick in the book to not only outwit Tyler, who is a passionate chess player, but to cross a devious murder plot...

David Janssen ... Richard Diamond
George Baxter ... Thaddeus Tyler
Lawrence Dobkin ... Warburton Flagge (as Larry Dobkin)
Ross Elliott ... Norman Dewitt
Jonathan Hole ... Colin
Madeleine Taylor Holmes ... Arminta Tyler (as Madeleine Holmes)

Catherine McLeod ... Mildred Tyler

Vaughn Taylor ... Julian Tyler

Season 1, Episode 9: The Torch Carriers

26 August 1957
Syndicate gangster Marty Skopka goes into hiding when he is wrongly accused of murder. Richard Diamond couldn't care less but an attractive young woman sends him on a search for the gangster. When Diamond finds out that he has been used to locate Marty, he has to run against time to stop a young woman from making a terrible - and deadly - mistake...

Season 1, Episode 10: The Pete Rocco Case

9 September 1957
Pete Rocco escapes from prison to pay Richard Diamond back for putting him there. What he doesn't know is that his brother Dan has plans of his own. Soon, Richard Diamond finds himself at the wrong and of a .38 and gets to enjoy the sweet smell of death - in a candy store...

David Janssen ... Richard Diamond

Charles Bronson ... Dan Rocco
Marga Ann Deighton ... Ma Rocco
Richard Devon ... Peter Rocco
Anne Neyland ... Waitress
Marvin Press ... Naty

Season 1, Episode 11: Venus of Park Avenue

16 September 1957
A quarter of a million dollars is at stake when an antique piece of art appears to be fake. Hired to find out what happened to the real art piece and who is behind the scheme, Richard Diamond soon finds out that he has been used and comes up with a plan of his own to take a hand in this foul play...

David Janssen ... Richard Diamond
Edgar Barrier ... Durant
Betty Harford ... Vera
Harry Harvey ... Chambers (as Harry Harvey Sr.)
Addison Richards ... Evanson
Julie Van Zandt ... Alex

Season 1, Episode 12: Merry-Go-Round Case

23 September 1957
When Richard Diamond learns that his former war buddy Jack Milhoan has turned bad, he finds himself torn between friendship and principle - Jack is a cold-blooded killer, but he also is a friend who needs help. Richard decides to do what he can, but soon finds himself staring into the deadly muzzle of a .38 - in the hands of an old friend...

David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough

James Best ... Jack Milhoan
Nancy Marshall ... Marilyn Milhoan
Lugene Sanders ... Eve Miller
Gloria Winters ... Jane Thomas
Leonard Bremen ... Breezy (as Lennie Bremen)
William F. Leicester ... Rupert Miller (as William Leicester)

Bill Erwin ... Detective Ryker (uncredited)
Fred Sherman ... Gas Station Owner (uncredited)

Season 2


Season 2, Episode 1: The Space Society

2 January 1958


David Janssen ... Richard Diamond
Stephen Chase ... Capt. Savvo

Ellen Corby ... Harriet

Douglas Dick ... Harold Cronin
Robert Dix ... Jim
Joan Sudlow
Luis Van Rooten ... Mr. Grant

Season 2, Episode 2: The Dark Horse

9 January 1958
Richard Diamond is hired by a newspaper editor to protect their party candidate from murder or abduction by a corrupt syndicate.

David Janssen ... Richard Diamond
David Alpert ... Dean
Russ Conway ... Alec Bruce

Jack Elam ... Danny
Frances Mercer ... Allison Garvey
Robert Shayne ... Mike Coleman
Larry Thor ... Michaud
Baynes Barron ... Marco (uncredited)

Season 2, Episode 3: The Payoff

16 January 1958


David Janssen ... Richard Diamond

Doris Dowling ... Marion Carl
Bartlett Robinson ... Otto Carl

Peter Hansen ... Frank Bonner

Henry Corden ... Turk Stell
Bobby Jordan ... Connie Thorpe (as Robert Jordan)
Al Avalon ... Eddie Bell
Jay Adler ... Herbie Wilkins
Barbara Pepper ... Mrs. Brody

Season 2, Episode 4: Double Jeopardy

23 January 1958
When diamonds from a five-year-old robbery start appearing on the black market, the insurance company hires Richard Diamond to recover the gems. His primary suspect is the man who convicted of the crime and just released from prison, but the private detective begins believe that perhaps the man is innocent of the original crime as he maintains.

David Janssen ... Richard Diamond
Fredd Wayne ... Tom Tanner
Barbara Eiler ... Mrs. Tanner
Robert Burton ... Fred Hart
Tom Greenway ... Lieutenant Peters
Hugh Sanders ... Lew Granger
Lewis Martin ... Vice President
Albie Gaye ... Switchboard Girl

Season 2, Episode 5: Arson

30 January 1958
Diamond investigates an arson, which may turn out to be murder.

David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough
Jay Novello ... Beanie
Lester Matthews ... Frank Grace
Joseph Mell ... Fred Wilkin (as Joe Mell)
Robert Foulk ... Sal Prince
Sarah Selby ... Mrs. Brubaker
Gail Ganley ... Celia Devon
William Swan ... Jerry Fenton

Season 2, Episode 6: The Ed Church Case

6 February 1958


David Janssen ... Richard Diamond

Roscoe Karns ... Ed Church (as Roscoe Karnes)
Dan Barton ... George King
James Flavin ... Sam Cooper
Jil Jarmyn ... Lois Baker
Milt Hamerman ... Jake

Vic Morrow ... Joe Rovi

Season 2, Episode 7: Chinese Honeymoon

13 February 1958


David Janssen ... Richard Diamond
Peter Chong ... Fong

Ted de Corsia ... Albert Stewart

James Hong ... Young Man
Hugh Lawrence ... Lt. Harris
Weaver Levy ... Lee

Lisa Lu ... Cassia

Keye Luke ... Dr. Lin Chang
Melinda Markey ... Nurse
Victor Sen Yung ... Magan

Season 2, Episode 8: Rodeo

20 February 1958
Ed Murdock is a hot-headed rodeo star. When someone sabotages his equipment, he attacks who he thinks is responsible. It seems someone is out to get him but Murdock doesn't seem willing to think through the problem...he just wants to hit someone. So, Richard Diamond agrees to stick with Murdock and keep him out of trouble and possibly save his life.

David Janssen ... Richard Diamond
Barbara Baxley ... Marcy Murdock

Lee Van Cleef ... Ed Murdock
Harry Lauter ... Charles Decker
John Compton ... Bud Lee
George Cisar ... Pete Balsam

Dan Blocker ... Cloudy Sims

Regis Toomey ... Lt. McGough

Season 2, Episode 9: A Cup of Black Coffee

27 February 1958

Season 2, Episode 10: The George Dale Case

6 March 1958


David Janssen ... Richard Diamond
Kathleen Case ... Sally (as Cathy Case)

Virginia Gregg ... Voice of Vivian

John Hoyt ... Burnison
Jack Lambert ... Gus
Art Lewis ... Henry
Laurie Mitchell ... Dolly
Mario Siletti ... Tony

Regis Toomey ... Lt. McGough
Jean Willes ... Madge

Season 2, Episode 11: Juvenile Jacket

13 March 1958


David Janssen ... Richard Diamond
Nick Adams ... Mickey Houseman
Byron Foulger ... Mr. Leggett
Harry Jackson ... Mr. Cole
Adrienne Marden ... Mrs. Bond
Steven Terrell ... George Bond (as Steve Terrell)
Katherine Warren ... Mrs. Houseman (as Katharine Warren)

Season 2, Episode 12: Pension Plan

27 March 1958


David Janssen ... Richard Diamond

Edward Binns ... Larrabee
Francis De Sales ... Philip Brinkley
Jonathan Hole ... Virgil Twinkham
Alexander Lockwood ... Carl Waldron
Ken Mayer ... Jeffries
Troy Melton ... Sludge Whipple
Alan Wells ... Tony Barrett

Season 2, Episode 13: Short Haul

10 April 1958


David Janssen ... Richard Diamond

Don Beddoe ... Lieutenant Stone
Lane Bradford ... Sal Noonan
John Cliff ... Larry Donovan
Nan Leslie ... Myrna O'Malley
Sean McClory ... Ted O'Malley
Oliver McGowan ... George Neate
John Mitchum ... Joe
William Tannen ... Bert Grady

Season 2, Episode 14: Another Man's Poison

17 April 1958


David Janssen ... Richard Diamond

Claude Akins ... Kenny Lambert
Paul Bryar ... Donald Hastings
Phyllis Coates ... Monica
Craig Duncan ... Matson
Zina Provendie ... Mrs. Hastings

Season 2, Episode 15: The Purple Penguin

24 April 1958


David Janssen ... Richard Diamond
George Barrows ... Roy
Chick Chandler ... Jimmy White

Patricia Donahue ... Bunny
John Eldredge ... Red Brunter
Stacy Harris ... Eddie Marquis

Kasey Rogers ... Jane Marquis
Manning Ross ... Tonie

Season 2, Episode 16: Lost Testament

1 May 1958


David Janssen ... Richard Diamond
Walter Barnes ... Herbie Sanford

Jocelyn Brando ... Wife
Francis De Sales ... Charles Courtney
Norma Moore ... Louanne Manners
Burt Nelson ... Harry Hill
Bartlett Robinson ... Paul Manners
Charles Victor ... Bert Saxon (as Charles C. Victor)
Garry Walberg ... Chooch Johnson

Season 2, Episode 17: The Percentage Takers

8 May 1958


David Janssen ... Richard Diamond
Laurie Anders

Jack Cassidy ... Danny Fortune

Joyce Compton ... Waitress
Harry Harvey ... Grady Smith (as Harry Harvey Sr.)
John Indrisano ... Gambino
Damian O'Flynn ... Fats Waldren
Gil Perkins ... Cryer
Richard Reeves ... Willie Gibson (as Dick Reeves)
Caroline Richter ... The Blonde
Gloria Winters ... Dixie Moore

Season 2, Episode 18: Widow's Walk

22 May 1958


David Janssen ... Richard Diamond
Christopher Dark ... Rudi Trekhala
John Dennis ... Anson
Dorothy Green ... Linda Sands
Thomas Browne Henry ... Oliver Sands (as Thomas B. Henry)
Charles Horvath ... Miller
Jack Shea ... Officer

Season 2, Episode 19: Bungalow Murder

29 May 1958


David Janssen ... Richard Diamond
Arthur Batanides ... Chip Cooper
Marguerite Chapman ... Norma Randell
Gordon Jones ... Mike Gower
Bruce MacFarlane ... Samuel Horton
John Mitchum ... Jimmy Logan
Eddie Quillan ... Mel Jones
Harry Raven ... Witness
Mark Roberts ... Rod Leighton
Chet Stratton ... The Director

Season 2, Episode 20: One Foot in the Grave

12 June 1958


David Janssen ... Richard Diamond
Chris Alcaide ... First Thug
Robert Gist ... Joe Quincy (as Bob Gist)
Sol Gorss ... Second Thug
Kipp Hamilton ... Yvette Greener
Clegg Hoyt ... The Masseur
Jess Kirkpatrick ... Ray

Charles Lane ... Kevin Anders
Peggy Maley ... Babs
Grant Richards ... Charley Blaine

Season 2, Episode 21: Snow Queen

26 June 1958


David Janssen ... Richard Diamond

Regis Toomey ... Lt. McGough

Phyllis Avery ... Martha Shearing
Zachary Charles ... Woody
John Goddard ... Cop
George Meader ... Otto Cramer

Robert Quarry ... Larry

Season 3


Season 3, Episode 1: The Sport

15 February 1959


David Janssen ... Richard Diamond
Suzanne Alexander ... Brunette

Barbara Bain ... Karen Wells
Irene Hervey ... Mary Forsythe
Ed Kemmer ... Frank Sonnett

Ross Martin ... Tony Gino
Ronnie Rondell Jr. ... Larry Forsythe (as Ronnie Rondell)

Mort Sahl ... Himself

Mary Tyler Moore ... Sam (voice) (uncredited)

Season 3, Episode 2: Pack Rat

22 February 1959


David Janssen ... Richard Diamond

Barbara Bain ... Karen Wells

Frank Albertson ... Stuart Riker
John Gallaudet ... Captain Francis McCormack
Jon Lormer ... Gerald Wilkerson

Season 3, Episode 3: Body of the Crime

1 March 1959


David Janssen ... Richard Diamond

Barbara Bain ... Karen Wells
Richard Devon ... Sgt. Alden
Lawrence Dobkin ... Joey Kane
Dolores Donlon ... Evelyn Ames

Don Durant ... Pat Sharkey
Bern Hoffman ... Marxie
Sandy Kenyon ... Harry Baker

Season 3, Episode 4: Soft Touch

8 March 1959


David Janssen ... Richard Diamond

Barbara Bain ... Karen Wells
Corinne Calvet ... Le Muneut
Berry Kroeger ... Raoul

Celia Lovsky ... Senora del Vays

Season 3, Episode 5: Boomerang Bait

15 March 1959


David Janssen ... Richard Diamond

Jack Albertson ... Fallace

Eleanor Audley ... Mrs. Deneken
Sandy Kenyon ... Lt. Baker
Jana Lund ... Marilyn Ann
Peggy Maley ... Claire
Ric Roman ... Man
Jeanne Tatum ... Woman
James Westerfield ... McAllister

Season 3, Episode 6: Matador Murder

22 March 1959


David Janssen ... Richard Diamond

Barbara Bain ... Karen Wells

Mary Tyler Moore ... Sam #1 (as Mary Moore)

Richard Carlyle ... Barney Crane
George Drake ... Charlie
Chana Eden ... Victoria Sebastian
Elisabeth Fraser ... Dorian Crane
Gregory Gaye ... Van Zandt
Peter Mamakos ... Arturo Mantoya
Manning Ross ... Lieutenant Pepe

Season 3, Episode 7: Murder at the Mansion

29 March 1959


David Janssen ... Richard Diamond

James Drury ... Harding Jr.

Robert Ellenstein ... Kirsen
Frank Ferguson ... Capt. Hoyt
John Harmon ... Gardener

John Hoyt ... Harding Sr.

Season 3, Episode 8: Marineland Mystery

5 April 1959


David Janssen ... Richard Diamond
Lewis Charles ... Burke
Michael Fox ... Paul Schofield
Art Lewis ... Karns
Joyce Meadows ... Linda
Troy Melton ... Roya
Jean Olsen ... Waitress

Season 3, Episode 9: Charity Affair

12 April 1959

Season 3, Episode 10: Two for Paradise

19 April 1959


David Janssen ... Richard Diamond

Charles Aidman ... Joe Vale
Russ Bender ... The Sheriff

Willis Bouchey ... Lew Morse
Lee Farr ... Tom Vale
Billy Halop ... Charlie Cole (as Bill Halop)
Gil Perkins ... Dan Vale
Christine White ... Peggy Nolan

Mary Tyler Moore ... Sam (uncredited)

Season 3, Episode 11: Crown of Silla

3 May 1959


David Janssen ... Richard Diamond
Lillian Adams ... Goldie

John Anderson ... Paul Russell
Gail Kobe ... Anne Mitchell

Abraham Sofaer ... Mr. Constantine
Ben Wright ... Maxwell

Season 3, Episode 12: Jukebox

10 May 1959


David Janssen ... Richard Diamond
Paul Bryar ... Lt. Ross
Terry Frost ... Ralph

Joi Lansing ... Diane

Ruta Lee ... Louise
Walter Sande ... Thompson
Alan Wells ... Chick

Season 3, Episode 13: Echo of Laughter

17 May 1959


David Janssen ... Richard Diamond
Brook Byron ... Edna
Gordon Polk ... Desk Clerk

Karen Sharpe ... Ruth

Michael Strong ... George Maxton
Jesse White ... Walt Conlin

Season 3, Episode 14: The Limping Man

24 May 1959


David Janssen ... Richard Diamond
Hillary Brooke ... Winifred
Eric Feldary ... Arthur

DeForest Kelley ... Sheriff

Bethel Leslie ... Faith
Robert Nichols ... Gas Station Attendant

Season 3, Episode 15: Hideout

31 May 1959


David Janssen ... Richard Diamond

Barry Gordon ... Tommy Logan
Stacy Harris ... Frank Marsala
Mary Alan Hokanson ... Sister Elizabeth
Nestor Paiva ... Alex
Roxane Brooks ... Sam (uncredited)

Season 3, Episode 16: Rough Cut

7 June 1959

Season 3, Episode 17: Family Affair

14 June 1959


David Janssen ... Richard Diamond

Patricia Barry ... Claire
Harry Bartell ... Manager
Leonard Bremen ... Harry (as Lennie Bremen)

Marian Collier ... Audrey

Jeanette Nolan ... Edna
Richard Reeves ... Steve
Sydney Smith ... Ralph Powers

Season 3, Episode 18: Design for Murder

21 June 1959

Season 3, Episode 19: Hoodlum

5 October 1959


David Janssen ... Richard Diamond
John Alvin ... Doc
Peter Leeds ... Frank
Adrienne Marden ... Mrs. McPherson
Renny McEvoy ... Gang Member
Gil Perkins ... Gang Member

Alan Reed ... Trumbo
Cecil Weston ... Gang Member

Season 3, Episode 20: Act of Grace

12 October 1959


David Janssen ... Richard Diamond

Norman Alden ... Ben Regan (as Norm Alden)

Eleanor Audley ... Agnes Wilton

Patricia Donahue ... Harriet Barnes

William Schallert ... Charlie Kane
Mario Siletti ... Waldo

Mary Tyler Moore ... Sam (voice) (uncredited)

Season 3, Episode 21: Bookie

19 October 1959


David Janssen ... Richard Diamond
Russ Conway ... Lt. Pete Kile

Ross Martin ... Nate Muro
Merry Anders ... Claudia Reed
Buddy Lewis ... Sookey
Peggy Maley ... Sally
John Goddard ... Jeff

Joseph Ruskin ... Chick

Mary Tyler Moore ... Sam (voice)

Season 3, Episode 22: The Client

26 October 1959


David Janssen ... Richard Diamond
Peter Brocco ... Harry Tyler
Nestor Paiva ... Emilio Tomas
Bartlett Robinson ... Albert Gunther
Carlos Romero ... Jose

Season 3, Episode 23: The Runaway

2 November 1959


David Janssen ... Richard Diamond
Ross Elliott ... Walter Cummings
Maxine Cooper ... Edith Belden

Charles Aidman ... George Belden
Mark Allen ... Detective Harry Tyler
Jonathan Kidd ... Carl

Mary Tyler Moore ... Sam (voice) (uncredited)

Season 3, Episode 24: No Laughing Matter

9 November 1959


David Janssen ... Richard Diamond

Joey Bishop ... Joey Kirk
Sol Gorss ... Fred Candido
Don Haggerty ... Harry Moxton
Carole Mathews ... Rita Kirk

Season 3, Episode 25: The Messenger

16 November 1959


David Janssen ... Richard Diamond

Frank Albertson ... Gerald Clayton
Joan Camden ... Ruth Cozen

Season 3, Episode 26: The Counselor

23 November 1959


David Janssen ... Richard Diamond
Bob Bass ... Juror

John Craven ... Juror
King Donovan ... Hamilton Chase
Gordon Jones ... Joel Finlay
Barbara Pepper ... Clara Chase

Arthur Peterson ... Dr. Platt

Season 3, Episode 27: The Image

30 November 1959

Season 3, Episode 28: The Adjuster

7 December 1959


David Janssen ... Richard Diamond
Dick Foran ... David Steele

Dabbs Greer ... Scooter Jaffee

DeForest Kelley ... Ken Porter
Syd Saylor ... The Handyman
Nancy Valentine ... Nancy Porter

Season 3, Episode 29: Marked for Murder

14 December 1959


David Janssen ... Richard Diamond
Russ Conway ... Lt. Pete Kile
Patricia Huston ... Myra Cantrell
Peter Leeds ... Sidney Gordon / Harold Jason
Dave Willock ... Henry Wilson

Ellen Corby ... Miss Carter
Stacy Graham ... Betty Pierce
Roxane Brooks ... Sam

Season 3, Episode 30: The Caller

21 December 1959


David Janssen ... Richard Diamond
Harry Bellaver ... Al Turbo
Lewis Charles ... Joey Able
Roberta Haynes ... Audry Billings
Frances Morris ... Mrs. Lester
Fritz Ford ... Beat Cop (uncredited)

Season 3, Episode 31: One Dead Cat

28 December 1959


David Janssen ... Richard Diamond
Richard Devon ... Police Detective

Jack Elam ... Perk Butler

Jacqueline Scott ... Jan Smith
Joan Tabor ... Ginny Abbott
Than Wyenn ... Bertie

Season 3, Episode 32: Dead to the World

11 January 1960


David Janssen ... Richard Diamond
Geraldine Brooks ... Helen Lear
William Edmonson ... Big Otto

Allison Hayes ... Angel Case
Robert Lowery ... Mark Sutro

Season 3, Episode 33: Seven Swords

18 January 1960


David Janssen ... Richard Diamond
Rodney Bell ... Drunk
Jerome Cowan ... Marvello
Mason Curry ... Sid Whitmore
Carol Ohmart ... Sally Chandler
Jeffrey Stone ... Larry Manners

Season 3, Episode 34: The Fine Art of Murder

25 January 1960


David Janssen ... Richard Diamond
Joan Banks ... Woman
Hillary Brooke ... Laura Renault
Roxane Brooks ... Sam
Russ Conway ... Lt. Pete Kile
Jonathan Hole ... Bank Manager

DeForest Kelley

Howard McNear ... Dr. Braun

Season 4


Season 4, Episode 1: The Popskull

28 June 1960

Season 4, Episode 2: And Whose Little Baby Are You?

5 July 1960


David Janssen ... Richard Diamond
Richard Crane ... Arnie
Linda Lawson ... Nola Carter
Patricia Michon (as Pat Michon)

Season 4, Episode 3: Fallen Star

19 July 1960


David Janssen ... Richard Diamond
Dusty Enders ... Dorothy Tabor (as Dusty Anders)
Tommy Farrell ... Frank Connelly (as Tom Farrell)
John Hubbard ... Ken Walsh
John Lupton ... Mark Larson
Mickey Simpson ... Harry Brice
Virginia Vincent ... Rita Gomez

Season 4, Episode 4: Coat of Arms

2 August 1960

Season 4, Episode 5: Double Trouble

9 August 1960


David Janssen ... Richard Diamond

Brad Dexter ... Wilton Mills

June Vincent ... Grace Williams

Max Showalter ... Bill Henry (as Casey Adams)
Russ Conway ... Lt. Pete Kile
Chris Warfield ... Arnold Bascomb
Hal Baylor ... Sailor Jackson
Jan Harrison ... Anita Wilson
Claire Du Brey ... Landlady
Roxane Brooks ... Sam
Tommy Cook ... Teenager (uncredited)

Season 4, Episode 6: The Lovely Fraud

16 August 1960

Season 4, Episode 7: Accent on Murder

23 August 1960


David Janssen ... Richard Diamond
Lili Kardell ... Rita Shearer
Peter Leeds ... Waldo Lattimer
Nancy Valentine ... Lila Bradley

Season 4, Episode 8: East of Danger

30 August 1960


David Janssen ... Richard Diamond
Russ Conway ... Lt. Pete Kile
Roxane Brooks ... Sam #2
Philip Ahn
Judy Dan ... Sally Fong

James Hong ... Chung Lin
Allen Jung ... Lee Fong
Guy Lee

Season 4, Episode 9: Running Scared

6 September 1960


David Janssen ... Richard Diamond
King Calder ... Kenneth Morrow

Marc Lawrence ... Vito Doria

Bethel Leslie ... Harriet Morrow

Season 4, Episode 10: The Mouse

13 September 1960


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