"Mitchell: You're wasting your time. There's only one way out of here. Make 'em kill you. Don't die... day at a time. Get it over! Then you can rest. Dead men can't work. Never... get out... till you die. Then you get paroled to a pine box."

"There's no escape... from his FIEND'S PARADISE of torture!"

"Crying, Lorraine? Many men are whipped on this island. You've never cried before."

"Paroled prisoners ENSLAVED... in a tropical PARADISE of torture!"

"[Unlocking the gate] One moment, gentlemen. We have no police on the island, so one has to take certain precautions. [Mark reaches up to touch wire fencing] Oh, I wouldn't touch those wires if I were you, Mr. Smith. There's a slight electrical current passing through them, to keep out the animals and snakes. You see the jungle comes awfully close to us here."

"[to Capt. Cort who's about to flog Mark Sheldon, a.k.a. Mr. Smith] Don't overdo it, Captain. There's a lot Mr. Smith ought to tell me and he may want to tell me before you finish. Oh, and be sure that he's able to work tomorrow."

"A beautiful woman... THE VICTIM... of this connoisseur of CRUELTY!"

"You ought to do something about your nervous condition, Mr. Brand. You must never talk too much. Nervous men sometimes talk too much, and they make mistakes, and you musn't make mistakes, Mr. Brand."

"Frank Yaconelli — Pedro"

"Paul Fix — Dr. Mendoza"

"Frank Reicher — Professor Kendall"

"Simone Simon — Belle"

"You'll forgive me if I don't ask you to sit down, Mr. Smith, but your clothes and my furniture... I'm sure you'll understand."

"Men die under the lash... of his TORTURING WHIP...! Women SHUDDER at the touch!"

"Vincent Price — Sir Geoffrey Radcliffe / The Invisible Man"

"Now you can call me "cyclops", because I have one good eye."

"The mightiest thrill picture ever made!"

"Strange how absorbed man has been in the size of things!"

"Diabolical Dr. Cyclops"

"Albert Dekker — Dr. Alexander Thorkel"

"Thomas Coley — Bill Stockton"