Tightrope! is an American crime drama series that aired on CBS from September 1959 to September 1960, under the alternating sponsorship of the (Aqua Velva, Lectric Shave, etc.), and American Tobacco (Pall Mall). Produced by Russell Rouse and Clarence Greene in association with Screen Gems, the series stars Mike Connors as an undercover agent named "Nick" who was assigned to infiltrate criminal gangs. The show was originally to have been titled Undercover Man, but it was changed before going to air. Actor Robert Phillips, a former Los Angeles undercover policeman and US Marine claimed the show was based on his exploits but that he was not chosen to portray himself.