The Mad Ghoul

A university chemistry professor experiments with an ancient Mayan gas on a medical student, turning the would-be surgeon into a murdering ghoul as part of a plan to steal his lover.

• James P. HoganDirector
• Brenda WeisbergScreenplay
• Paul GangelinScreenplay

• George ZuccoDr. Alfred Morris
• David BruceTed Allison
• Evelyn AnkersIsabel Lewis
• Turhan BeyEric Iverson
• Robert Armstrong'Scoop' McClure
• Milburn StoneSgt. Macklin
• Addison RichardsEditor Gavigan
• Rose HobartDella Elliott, reporter
• Andrew TombesMortician Eagan
• Charles McGrawDetective Garrity
• Lillian CornellIsabel's Singing Voice (voice) (uncredited)
• Gus Glassmire1st Cemetery Caretaker