A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.
as Mark Harris
as Dr. Elizabeth Merrill
as Dr. Miller Simon
as C.W. Crawford
as Lioa / Dilly
as Ginny Mendoza
as Xos / Chazz
as Boy
as Grant Stockwood
as Sub Captain Wes
as Medical Examiner
as Second Officer
as Air Lock Man
as Herb Wayland
as Lou
as Hot Tub Manager
as Myrtle
as Fish Store Clerk
