| Robert Conrad |  Appeared in 1 Episode An Exercise In Fatality |
| Dick Van Dyke |  Appeared in 1 Episode Negative Reaction |
| Partick McGoohan |  Appeared in 4 Episodes , Murderer in By Dawn's Early Light, Identity Crisis, Agenda For Murder, Ashes to Ashes |
| Robert Vaughn |  Appeared in 2 Episodes , Murderer in Troubled Waters |
| Oskar Werner |  Appeared in 1 Episode Playback |
| George Hamilton |  Appeared in 2 Episodes, Murderer in A Deadly State Of Mind, Caution: Murder Can Be Hazardous To Your Health |