It Takes a Thief (1968 TV series) motion picture "To Catch a Thief", directed by Alfred Hitchcock; both of their titles stem from the English proverb "Set a thief to catch a thief". (Or as is more widely used, "It takes a thief to catch a thief".) "It Takes a Thief," which was created by television writer Roland Kibbee, featured the adventures of cat burglar, pickpocket, and thief Alexander Mundy, who steals to finance his life as a polished playboy and sophisticate. He is in prison when the U.S. government's SIA (the fictional Secret Intelligence Agency) proposes a deal to Mundy: steal for the government in exchange
To Catch a Predator as undercover sting operations with the help of online watchdog group Perverted-Justice. Since the third installment, law enforcement and other officials were also involved, leading to the arrests of most individuals caught. No new episodes have aired since December 2015. NBC affiliates WTMJ in Milwaukee, KSHB in Kansas City and WBRE in Wilkes-Barre have also done local versions of "To Catch a Predator". Various spin-offs have aired in the same format, including "To Catch a Con Man", "To Catch an ID Thief", "To Catch a Car Thief" and "To Catch an i-Jacker", which featured iPod thieves. "To Catch a Predator"