The Mad Doctor of Market Street

The Mad Doctor of Market Street is a 1942 film about a mad scientist who experiments on a tropical island.
 * Directed by Joseph H. Lewis. Written by Al Martin.

Genius — or fiend? (taglines)

Dr. Ralph Benson

 * You see I've gone as far as I can with my scientific research among the lower animals, but it is obvious that my findings will not be accepted by the medical world until they have first been demonstrated upon a human being.

Taglines

 * Genius — or fiend?

Cast

 * Lionel Atwill — Graham / Dr. Ralph Benson
 * Una Merkel — Aunt Margaret Wentworth
 * Claire Dodd — Patricia Wentworth
 * Nat Pendleton — Red Hogan
 * Anne Nagel — Mrs. William Saunders
 * Hardie Albright — William Saunders
 * Richard Davies — Jim
 * John Eldredge — Dwight, Ship's Officer
 * Ray Mala — Barab
 * Noble Johnson — Native Chief Elan
 * Rosina Galli — Tanao, the Chief's Wife
 * Al Kikume — Kalo
 * Milton Kibbee — Hadley