At one point, Tom Hartley (Wallace Ford) arrives at the Rinehart home, and asks chauffeur Martin (Oscar Smith) to let Mary know "Mrs. Harper's little boy Tom is down here to see her".
During the police interrogation approx 53 mins into the movie the character is asked by the police chief 'Where is the serum' The reply was meant to be 'in the laboratory' but a Malaprop occurred and the character replied 'In the lavatory'. The same Malaprop occurred again less than a minute later by the police officer who, holding Degar at gunpoint orders 'C'mon,where's the lavatory'?