"Now, it is my theory, that one of us in the past, through dire necessity, was driven to cannibalism. The memory of that act was hammered like a nail into the mind of that man. Shrewd and brilliant, he could conceal his madness from the human eye, even from himself... but he can't conceal it from the eyes of the radio sensitivity."

"It affects strangely certain neurotic types. Yes, the moon is powerful. Why, twice a day it lifts billions of tons of water at high tide that wash the shores of the world, like an eternal old scrubwoman."

"There have been weird mysteries before and there will be weird mysteries again, but here is a thriller that will be remembered for years! A new note in exciting entertainment... An afternoon or evening in another world... An adventure in the realms of mystic romance with lovers fascinatingly different from any you've ever known!...A picture guaranteed to be the outstanding love-mystery of all time...portrayed by a remarkable cast that is worth the price of admission alone!"

"Leila Bennett — Mamie, Dr. Xavier's maid"

"John Wray — Dr. Haines - Academy of Surgical Research"

"Harry Beresford — Dr. Duke - Academy of Surgical Research"

"Mona Barrie — Eileen Crispin"

"Lionel Atwill — Dr. Fish"

"Shemp Howard — Det. Sgt. Sweeney"

"FOLLOW HIM—at Risk of Insanity! FIND HIM—and You'll Never Return!"

"Anne Gwynne — Kit Logan Church"

"Patric Knowles — Private Detective Jerry Church"

"Swell night for a murder!"

"Samuel S. Hinds — Dudley Crispin"

"If I hadn't lost my badge, I'd turn it in."

"Wallace Ford — Tom Hartley"

"Tully Marshall — Richard Rinehart"

"George Meeker — Arthur Hornsby"

"Sally Blane — Mary Rinehart"

"Bela Lugosi — Degar"

"A mad murdering midnight menace!"

"Merv Griffin — Georges Brevert"

"Paul Richards — Rene the Knife-thrower"

"Rolfe Sedan — LeBon"

"Dolores Dorn — Camille"

"Allyn Ann McLerie — Yvonne"

"Anthony Caruso — Jacques the One-Eyed"

"Erin O'Brien-Moore — Wardrobe Woman"

"Veola Vonn — Arlette"

"Karl Malden — Dr. Marais"