"Deadly Carnival" is the seventeenth and final episode of the 1977-1978 television series Man from Atlantis. It is the thirteenth regular episode of the series discounting the first four pilot movies. It was directed by Dennis Donnelly and written by Larry Alexander. It first aired on NBC on Tuesday, June 6th, 1978. Guest stars for this episode include Billy Barty, Sharon Farrell, Donna Garrett, James Ingersoll and Anthony James. In this episode, Mark Harris infiltrates an ocean-side carnival where he investigates a plot to steal an ancient Egyptian artifact from a museum. The only way to gain entrance to the museum is through an underwater passageway that only Mark can fit through.
Actress Belinda Montgomery does not appear and is no longer listed in the opening credits.
Following the conclusion of the series, actor Patrick Duffy will have a long and notable career playing Bobby Ewing on the night time soap opera Dallas.
