10 user 7 critic

Bad Medicine 

Kolchak discovers a creature stalking Chicago that takes eerie animal forms and uses its hypnotic eyes to transfix and then kill wealthy matrons for their jewels.


Alexander Grasshoff (as Alex Grasshoff)


Jeffrey Grant Rice (created by) (as Jeff Rice), L. Ford Neale | 1 more credit »




Episode complete credited cast:
Darren McGavin ... Carl Kolchak
Simon Oakland ... Tony Vincenzo
Ramon Bieri ... Captain Joe Baker
Richard Kiel ... The Diablero
Alice Ghostley ... Dr. Agnes Temple
Victor Jory ... Charles Rolling Thunder
Jack Grinnage ... Ron Updyke
David Lewis ... Auctioneer
Marvin Kaplan ... Delgado
Ruth McDevitt ... Emily Cowles
James Griffith ... Schwartz
Dennis McCarthy Dennis McCarthy ... Ballistics Man
Morris Buchanan ... Guard
Keith Walker Keith Walker ... 1st Reporter
Marilyn Clarke Marilyn Clarke ... Hostess (as Madilyn Clark)


A Native American legend materializes in Chicago, and Carl discovers it when he investigates the mysterious deaths of two wealthy society matrons who possessed priceless jewels. When the murders increase, Kolchak learns that the force at work is know as The Diablero, a being cursed to roam the Earth in search of valuable gems. Written by acidxian

Plot Summary | Add Synopsis


Did You Know?


Producers like Richard Kiel's performance as Diablero so much they asked him to portray the Paramafait (Cajun bogeyman) in "The Spanish Moss Murders" the very next week. See more »


When Kolchak takes a photograph of the 'dead' dog it moves an ear. See more »


Carl Kolchak: [Grabbing his hat and jacket] Okay. If clothes make the reporter around here, then Carl Kolchak can play that game too!
Tony Vincenzo: Where are you going?
Carl Kolchak: [Storming out the door] I'm taking the rest of the afternoon off. I am going out and buy myself some new clothes, okay?
Emily Cowles: [Delighted] Finally!
See more »

User Reviews

Eight foot Diablero
14 September 2017 | by bkoganbingSee all my reviews

Richard Kiel most famous for being Jaws in the James Bond movies plays a rather large Indian evil spirit from the cliff dwelling Hopis who can shape shift and become almost anything. Right now he's using those powers and abilities to accumulate a rather large store of some valuable jewels, courtesy of some of Chicago's society matrons who also get very dead for their contribution.

Victory Jory playing an old Indian shaman whose advice is invaluable to Darren McGavin in finding and defeating the Diablero which is what the cliff dwelling Indian call this spirit. Rival reporter in INS Jack Grinnage working on another story also provides some inadvertent aid in locating Kiel's dwelling.

Just where would an 8 foot cliff dwelling Indian spirit reside in Chicago?

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Release Date:

29 November 1974 (USA) See more »

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Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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