Notable Guest Appearances - Serial Murderers
| Partick McGoohan |     Appeared in 4 Episodes , Murderer in By Dawn's Early Light, Identity Crisis, Agenda For Murder, Ashes to Ashes |
| Robert Culp |    Appeared in 4 Episodes , Murderer in Death Lends A Hand, The Most Crucial Game, Double Exposure |
| Jack Cassidy |    Appeared in 3 Episodes , Murderer in Murder By The Book, Publish Or Perish, Now You See Him |
| George Hamilton |   Appeared in 2 Episodes, Murderer in A Deadly State Of Mind, Caution: Murder Can Be Hazardous To Your Health |
| William Shatner |   Appeared in 2 Episodes, Murderer in Fade In To Murder, Butterfly In Shades Of Gray |