[citation needed] In total, there were 122 episodes, plus the series' two-hour pilot and a "revival" television film, The Return of Frank Cannon (1980).[citation needed] Cannon was portrayed in the series as a veteran of the Korean War and a former member of the Los Angeles Police Department.Cannon was a widower, having lost his wife and son in a bomb attack while he was on the police force, as revealed in the two-hour pilot.[citation needed] Conrad was an overweight actor,[1][2] and the series, especially in its early episodes, made frequent mention of Cannon's weight.Many episode plot lines involved Cannon traveling and having to deal with various and sundry incompetent and/or corrupt law enforcement agencies and officials.[citation needed] Notable guest stars included Anne Baxter, Johnny Cash, Cathy Lee Crosby, Micky Dolenz, Joan Fontaine, Mark Hamill, Larry Linville, Sondra Locke, Gary Lockwood, Leslie Nielsen, Nick Nolte, Susan Oliver, Stefanie Powers, Gordon Pinsent, Denver Pyle, Roy Scheider, and Martin Sheen.A later episode would reveal that his wife and child were killed by a car bomb meant for him, prompting him to retire from the Los Angeles police force and become a private detective.In the skit, Hill played several staple characters of the genre: Frank Cannon, Robert Ironside, Theo Kojak, Sam McCloud (ironically, all but the latter were airing on BBC1 at the time rather than on Hill's home of ITV) and, although he was not a part of the genre, Agatha Christie's Belgian detective, Hercule Poirot.