'Imp' by Shimon Wincelberg

When a mischievous imp named Moby causes the crew of an underwater station to revert to their childhood merely by touching them, the Foundation of Ocean Research sends the crew of the Cetacean to investigate. Entering the station, Mark discovers that all but one of the men are now dead; he takes the survivor back to Cetacean, unaware that the deadly imp has managed to stow aboard…

Patrick Duffy (Mark Harris), Belinda Montgomery (Doctor Elizabeth Merrill), Alan Fudge (C.W. Crawford), Robert Lussier (Brent), Richard Williams (Jomo), J. Victor Lopez (Chuey), Jean Marie Hon (Jane), Anson Downes (Allen), Pat Morita (Moby), Lyman Ward (Clavius), Mel Scott, Dick Gautier (Duke)

Directed by Paul Krasny
Produced by Herman Miller

Executive Producer Herbert F. Solow

TX (US): 25th April 1978

Notes:
*Featuring Mark Harris, Doctor Elizabeth Merrill and C.W. Crawford