The Bowery Boys--Slip, Sach, Bobby, Whitey & Chuck--start their own exterminating service, and get a job which takes them to a spooky old abandoned mansion in the middle of the night. Meeting up with pal Gabe and his new French bride, the boys are tormented by mad scientists who try to convince them the place is haunted and then kidnap Sach in order to place his brain inside a gorilla.
Leo Gorcey
as Terence Aloysius 'Slip' Mahoney
Huntz Hall
as Sach
Douglass Dumbrille
as Dr. Coslow
Bobby Jordan
as Bobby
Gabriel Dell
as Gabe 'Gabie' Moreno
William Benedict
as Whitey (as Billy Benedict)
David Gorcey
as Chuck
Tanis Chandler
as Mignon
Maurice Cass
as Dr. Bender
Vera Lewis
as Mrs. Grimm
Charles Middleton
as Mr. Stiles
Chester Clute
as Brown
