

"A Fantastic and Spectacular Voyage... Through the Human Body... Into the Brain."
In order to save an assassinated scientist, a submarine and its crew are shrunk to microscopic size and injected into his bloodstream.
Grant

Cora

General Carter

Dr. Michaels

Col. Donald Reid

Capt. Bill Owens

Dr. Duval

Jan Benes

Communications Aide

Secret Service

Nurse

Technician

Wireless Operator
Military Policeman (uncredited)

Dr. Sawyer (Hypothermia technician) (uncredited)

Henry - Heart Monitoring (uncredited)

Young Scientist (uncredited)
