Several couples are notified that they have won an ocean cruise, but they actually have been lured onto a ship so that they can be murdered.
Richard Long
as Jerry Carter
Polly Bergen
as Sylvia Carter
Edward Albert
as James Radney
Kate Jackson
as Mary Frances Radney
Celeste Holm
as Elizabeth Mason
Tom Bosley
as David Mason
Michael Constantine
as Dr. Burke
Cesare Danova
as Captain Vettori
Amzie Strickland
as Lynn
Alain Patrick
as Barrere
Maurice Sherbanee
as Room Steward
Wesley Gale
as Hotel Clerk (as West Gale)
