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Ralph Bellamy - Ellery QueenMargaret Lindsay - Nikki PorterCharley Grapewin - Insp. QueenJames Burke - Sgt. VelleMichael Whalen - Dr. James RogersMarsha Hunt - Barbara BraunFred Niblo - John BraunCharles Lane - Dr. ProutyAnn Shoemaker - Lydia BraunMarion Martin - CorneliaDouglas Fowley - Rocky TaylorMorgan Wallace - ZacharyByron Foulger - AmosKatherine DeMille - Valerie NorrisPeter Bronte - Doctor's Assistant (uncredited)Jack Cheatham - Desk Sergeant (uncredited)Arthur Millett - Elevator Guard (uncredited)Frank O'Connor - Ambulance Driver (uncredited)Lee Phelps - Flynn (uncredited)Jack Rice - Rogers' Assistant (uncredited)Alan Ladd - Elevator Passenger (uncredited) (unconfirmed)
Ratings
from TMDB5.8/ 105 votes