The Perils of Penelope Pitstop premiered on CBS on September 13, 1969. The show ran for one season with a total of 17 half-hour episodes. It is a spin-off of Wacky Races, reprising the characters Penelope and the Ant Hill Mob. The series was patterned on the silent movie era melodrama cliffhanger movie serial The Peril of Pauline.