All were suspected - one was guilty!
The murders are committed in swift succession on board a liner crossing the Atlantic in a dense fog, and many of the passengers come under suspicion before the actual killer is bought to justice with the aid of a very substantial "ghost."
Mary Brian
Mary Fulton
Donald Cook
Wentworth Brown
Reginald Denny
Dr. Winstay
Robert McWade
Alonzo Holt
Helen Freeman
Madame Alva
Maude Eburne
Mrs. Jackson
G. Pat Collins
Mullaney
Edwin Maxwell
Ship Captain
Samuel S. Hinds
Dickens
Marjorie Gateson
Mrs. Bentley
C. Montague Shaw
Ship's Doctor
The Quiller Memorandum
Each Dawn I Die
Time Without Pity
Maniac
Plunder Road
Knock on Any Door
They Made Me a Fugitive
Cigarettes & Coffee
Islands
The Truth About Emanuel
The Damned Don't Cry
A Study in Terror
Framed
The Blue Gardenia
The Mirror Crack'd
M
LaRoy, Texas
Edge of the City
A Kiss Before Dying
The Dark Past