Season 1

01 Death Runs Wild Episode 117th September 1960 Story tells of a demented woman out to kill private eye Anthony George. The instrument of death, as it turned out, was, a wild stallion she stocked on her ranch. Her motive was revenge. On a previous case, the private eye had brought her lover to justice and the gas chamber. 02 Interrupted Honeymoon Episode 224th September 1960 03 The Cyanide Touch Episode 31st October 1960 04 Lady on the Brink Episode 415th October 1960 Checkmate comes to the aid of a woman with a traumatic past when it becomes evident that someone is trying to make it appear she's mentally unstable. discrediting her eye-witness testimony at a murder trial. 05 Face in the Window Episode 522nd October 1960 06 Runaway Episode 629th October 1960 A girl shows up at Corey's apartment, claiming that she is running from someone who is trying to kill her. However, the detectives all find that nothing she has said checks out, including her numerous aliases, and that she's actually an heiress running from a controlling grandmother. But it does appear that the part about someone trying to kill her may be the truth. 07 Target: Tycoon Episode 75th November 1960 08 The Deadly Shadow Episode 812th November 1960 09 The Dark Divide Episode 919th November 1960 Barbara Rush plays a dual role in The dark divide. Why should Margaret Russell's life be threatened? Her aunt keeps getting phone calls from a woman named Nikki Garnett, threatening Margaret. What motive could the woman have? 10 Moment of Truth Episode 1026th November 1960 11 The Mask of Vengeance Episode 113rd December 1960 12 The Murder Game Episode 1217th December 1960 Attorney Emory Olivant invites Corey, Sills and Dr. Hyatt to a party. Once all the guests have arrived, Olivant announces that they are going to play a game—a murder game in which he will be the killer. 13 The Princess in the Tower Episode 1331st December 1960 14 The Terror from the East Episode 147th January 1961 15 The Human Touch Episode 1514th January 1961 Arguably the finest episode of the series, featuring guest star Peter Lorre as an ex-con criminal mastermind determined to wreak revenge on master criminologist Sebastian Cabot. An intricate series of cat and mouse moves between the two geniuses culminates in a surprise and ultimately poignant ending, befitting the episode title. This episode stresses the close friendships between the three detectives of CHECKMATE INCORPORATED as it contrasts with that of the brilliant, but soulless Lorre. Directing, writing and acting are all exemplary. 16 Hour of Execution Episode 1621st January 1961 17 Don't Believe a Word She Says Episode 1728th January 1961 18 Laugh Till I Die Episode 184th February 1961 19 Between Two Guns Episode 1911th February 1961 20 A Matter of Conscience Episode 2018th February 1961 21 Melody for Murder Episode 2125th February 1961 22 Phantom Lover Episode 224th March 1961 A woman believes her husband has killed her male friend, who can not be found. She hires Checkmate to investigate. 23 The Gift Episode 2311th March 1961 Lola Tuscany, a temperamental lady soprano, is having premonitions of her death. After her concert she is almost poisoned and Checkmate Inc. is hired to keep her safe. Don Corey is skeptical, believing it is a publicity stunt, until he is nearly killed when a bomb explodes in the car he and Lola are driving in. 24 One for the Book Episode 2418th March 1961 25 The Paper Killer Episode 2525th March 1961 26 Jungle Castle Episode 261st April 1961 After two attempts on his life, big game hunter Lee Tabor brings Dr. Hyatt and Carl to his home in the Malayan jungle. He asks for their help in finding out which of his three house guests is trying to kill him. 27 The Deadly Silence Episode 278th April 1961 28 Goodbye Griff Episode 2815th April 1961 ""Ex-convict Griff Nolan is jealous because his wife Libby earns more as a magazine editor than he does as a mechanic. More domestic strife develops when Griff becomes jealous of Libby's boss Lewis Bates --- and buys a gun."" -- TV Guide 29 Voyage Into Fear Episode 306th May 1961 30 Tight As a Drum Episode 3113th May 1961 31 Death by Design Episode 3220th May 1961 Eve Arden, plays a fashion designer, worried that someone is out to destroy her and her business. Checkmate have two main suspects. 32 The Thrill Seeker Episode 3327th May 1961 33 Hot Wind in a Cold Town Episode 3410th June 1961 34 A Slight Touch of Venom Episode 3517th June 1961 35 State of Shock Episode 3624th June 1961