Captain Casey Abbott commands an American submarine in the Pacific during World War II. When a perilous mission to retrieve a new Japanese mine for study goes awry, he's forced to abandon a likable combat diver. Abbott's orders to leave a man behind appear to be justified, but his second-in-command believes he had ulterior motives:

Genres

Cast

Ronald Reagan

Cmdr. Casey Abbott (Captain, USS Starfish)

Nancy Reagan

Nurse Lt. Helen Blair

Arthur Franz

Lt. Cmdr. Don Landon (XO, USS Starfish)

Robert Arthur

Freddy Warren

William Leslie

Lt. Paul Prentice

Harry Lauter

Lt. (j.g.) Wes Barton

Joe Turkel

Chick (as Joseph Turkel)

Don Keefer

Jug

Chester W. Nimitz

Himself (in prologue) (uncredited)