Man from Atlantis

S01E11 Imp

A mischievous little creature infiltrates an underwater facility, spreading chaos among the crew with just a touch. As three members fall victim to its antics, the F.F.O.R. picks up Duke, the sole survivor, communicating over the radio in a playful tone, prompting an investigation. Mark dives in to rescue Duke, unaware that the imp has secretly followed him aboard the Cetacean.