| Robert Stack | ... | Eliot Ness | |
| Virginia Vincent | ... | Mona Valentine | |
| Joe De Santis | ... | Daniel Oates | |
| Cliff Robertson | ... | Frank Halloway | |
| Jerry Paris | ... | Agent Martin Flaherty | |
| Frank Ferguson | ... | Dr. James Crenshaw | |
| Ernest Sarracino | ... | Tomaso Fellini | |
| Linda Wong | ... | Tuki | |
| Steve London | ... | Agent Jack Rossman | |
| Walter Winchell | ... | Narrator (voice) | |
| rest of cast listed alphabetically: | |||
| Richard Erdman | ... | Workman at Diner (uncredited) | |
| John Harmon | ... | Ed Johnson (uncredited) | |
| Bob Hopkins | ... | Charley Brant (uncredited) | |
| David McMahon | ... | Police Captain (uncredited) | |
| Maudie Prickett | ... | Telephone Supervisor (uncredited) | |
| Episode Crew |
Directed by | |||
| Walter Grauman | (as Walter E. Grauman) | ||
Writing credits | ||
| Leonard Kantor | (written by) | |
| Eliot Ness | (book "The Untouchables") and | |
| Oscar Fraley | (book "The Untouchables") | |
Produced by | |||
| Quinn Martin | .... | executive producer | |
| Josef Shaftel | .... | producer | |
Cinematography by | |||
| Charles Straumer | (director of photography) | ||
Film Editing by | |||
| Ben Ray | (as Ben H. Ray) | ||
Casting by | |||
| Kerwin Coughlin | |||
Art Direction by | |||
| Ralph Berger | |||
| Frank T. Smith | |||
Set Decoration by | |||
| Sandy Grace | |||
Makeup Department | |||
| Irene Beshon | .... | hair stylist | |
| Kiva Hoffman | .... | makeup artist | |
Production Management | |||
| Argyle Nelson | .... | production supervisor (as W. Argyle Nelson) | |
| Lloyd Richards | .... | production manager | |
Second Unit Director or Assistant Director | |||
| Vincent McEveety | .... | assistant director | |
| Sergei Petschnikoff | .... | assistant director (uncredited) | |
Art Department | |||
| Irving A. Feinberg | .... | property master (as Irving Feinberg) | |
Sound Department | |||
| T.T. Triplett | .... | sound engineer | |
| Josef von Stroheim | .... | sound editor | |
| Cam McCulloch | .... | sound engineer (uncredited) | |
| Joseph G. Sorokin | .... | sound editor (uncredited) | |
Costume and Wardrobe Department | |||
| Frank Delmar | .... | costumer | |
Editorial Department | |||
| Bill Heath | .... | editorial supervisor | |
Music Department | |||
| Nelson Riddle | .... | composer: theme music | |
| Ted Roberts | .... | music supervisor | |
Other crew | |||
| Arthur Fellows | .... | assistant to executive producer | |
| Harry Fried | .... | story editor | |
| Main series | Episode guide | Full cast and crew |
| Company credits | External reviews | IMDb TV section |
| IMDb Action section | IMDb USA section |
Cliff Robertson underplays the role of Frank Halloway, to great effect. Halloway is a brutal, ruthless and completely amoral killer and thief. When the story starts out his looks match his disposition, but because of some dental work and plastic surgery he becomes handsome and can't be recognized. He also kills just about everyone he comes in contact with, even those who have helped him to get as far as he did. He's not a smart criminal, but has tremendous animal cunning. He operates completely on instinct and self-preservation. In other words his heart is made of rat meat. He changes his looks, but inside remains ugly and evil. He is single minded and that is also his undoing. My favorite episode of The Untouchables, an excellent show I've loved since I was a kid in the 60s.