Wayne Crawford as Mike Canfield

Jason Evers as Dr. Elliot Snow

Roberta Leighton as Liza Williams

Cliff Emmich as Lester

William Kerwin as Sheriff Ben Williams

Bert Freed as Jack

Barbara Keegan as Maggie Snow (as Bobbie Ellyne Kosstrin)

Jerry Albert as Bubba (as Jerry Rhodes)

Frank Logan as Sam

Harry Kerwin as Goverment Agent #1

Rick Rhodes as Goverment Agent #2

Robert G. Noe as Hotel Clerk

William Roundebush as Boy Student

Denise Taylor as Girl Student

Leigh Walsh as Girl Student

Dan Fitzgerald as Cook (as Daniel L. Fitzgerald)

Edmund Lupinski as Boy on Beach (as Ed Lupinski)

Kim Nichols as Girl on Beach