The Plot Thickens — Cast & Crew

as Police Insp. Oscar Piper

as Hildegarde Withers

as Robert Wilkins

as Alice Stevens

as Kendall

as Joe

as John Carter

as Marie

as Jim

as Dagmar

as Robbins

as Josephine, Hildegarde's Maid (uncredited)

as Midget (uncredited)

as Gas Station Attendant (uncredited)

as Detective Fanning (uncredited)

as Woman with Bag (uncredited)

as Museum Guard in Egyptian Room (uncredited)

as Man in Line for Inspection (uncredited)

as Cassidy, a Policeman (uncredited)

as Mr. Gordon, Museum Guard (uncredited)

as First Hatless Suspect (uncredited)

as Theresa the Cook (uncredited)

as Man Threatening Carter (uncredited)