While watching from her train window, Nikki Collins witnesses a murder in a nearby building. When she alerts the police, they think she has read one too many mystery novels. She then enlists a popular mystery writer to help her solve the crime on her own, but her sleuthing attracts the attentions of suitors and killers.
Genres:
Deanna Durbin as Nikki Collins / Margo Martin
Ralph Bellamy as Jonathan Waring
David Bruce as Wayne Morgan
George Coulouris as Mr. Saunders, Circus Club Manager
Allen Jenkins as Danny (Waring chauffeur)
Dan Duryea as Arnold Waring
Edward Everett Horton as Mr. Haskell
Patricia Morison as Joyce Willams, Morgan's Girl
Maria Palmer as Margo Martin, Circus Club Singer
Elizabeth Patterson as Aunt Charlotte Waring
Samuel S. Hinds as Mr. Wiggam, Waring Lawyer
William Frawley as Desk Sgt. Brennan
Jacqueline deWit as Miss Fletcher, Morgan's Secretary
Lash LaRue as Circus Club Waiter / Henchman
Jane Adams as Circus Club Photographer
Thurston Hall as Josiah Waring
Ben Carter as Maxwell
Mabel Forrest as Wife
Barbara Bates as Hat Check Girl
Chester Clute as Train Conductor (uncredited)
Joseph Crehan as Train passenger (uncredited)
Fred Aldrich as
Ernest Anderson as
Carl Andre as
Bobby Barber as
Eddie Bartell as
Eddie Bruce as
Charles Cane as
James Carlisle as
Nora Cecil as
George Chandler as
André Charlot as
Martin Cichy as
Tom Coleman as
Oliver Cross as
Charles Dechamps as
Jack Deery as
Robert Dudley as
Tom Dugan as
Eddie Dunn as
Jay Eaton as
Sarah Edwards as
Harry Evans as
Franklyn Farnum as
Carl Faulkner as
Al Ferguson as
Clyde Fillmore as
Sam Finn as
Mary Forbes as
George Golden as
Ethyl May Halls as
Sam Harris as
Dick Hirbe as
Stuart Holmes as
Jack W. Johnston as
Philip Kieffer as
Mike Lally as
Perc Launders as
Ethelreda Leopold as
George J. Lewis as
George Lloyd as
Lock Martin as
Sam McDaniel as
Matt McHugh as
Bert Moorhouse as
William H. O'Brien as
Frank O'Connor as
Kathleen O'Malley as
Ralph Peters as
Rose Plumer as
Albert Pollet as
Karen Randle as
Bob Reeves as
Addison Richards as
Cyril Ring as
Bert Roach as
Jeffrey Sayre as
Charles Sherlock as
Brick Sullivan as
Jean Trent as
Leo White as
Eric Wilton as
Florence Wix as
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