Mario Torio
Michael Brooks
Jonathan 'Johnny'
Ann Nelson
Claire
Jean Bradford
Aunt Matilda Reed
Phillip Hastings
Dr. Bunyan
Dr. Doremus
Williams 'Bill', Matilda's Butler
Judge Alston
Harriet Rhodes
Joe Bland, FBI Agent
Mario's Hood
Private Detective
Gustav Reichman
Auctioneer
Mrs. Bunyan
Reporter (uncredited)
Police Sergeant (uncredited)
Robert - Matilda's Chauffeur (uncredited)
Minor Role (uncredited)
Policeman (uncredited)
Policeman (uncredited)