Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

Directed by: Sam Nelson & Norman Deming
Written by: Joseph F. Poland & Basil Dickey & Ned Dandy
Runtime: 215 minutes
Tagline: BLACK MAGIC Conjures Up A Holocaust Of Thrills!
Cast:
Warren Hull Warren Hull
Mandrake the Magician 
Doris Weston Doris Weston
Betty Houston 
Al Kikume Al Kikume
Lothar 
Rex Downing Rex Downing
Tommy Houston 
Edward Earle Edward Earle
Dr. Andre Bennett 
Forbes Murray Forbes Murray
Professor Houston