Réalisation: Charles David
Dans un train, Nikki Collins est témoin d'un meurtre alors qu'ils passent devant un immeuble. Quand elle le dit à la police, ils pensent qu'elle est folle car elle ne peut pas dire exactement où le crime s'est produit. Elle fait ensuite appel à un écrivain de romans policiers populaire pour l'aider à enquêter.
Deanna Durbin
Nikki Collins / Margo Martin
Ralph Bellamy
Jonathan Waring
David Bruce
Wayne Morgan
George Coulouris
Mr. Saunders, Circus Club Manager
Allen Jenkins
Danny (Waring chauffeur)
Dan Duryea
Arnold Waring
Edward Everett Horton
Mr. Haskell
Patricia Morison
Joyce Willams, Morgan's Girl
Maria Palmer
Margo Martin, Circus Club Singer
Elizabeth Patterson
Aunt Charlotte Waring
Samuel S. Hinds
Mr. Wiggam, Waring Lawyer
William Frawley
Desk Sgt. Brennan
Jacqueline deWit
Miss Fletcher, Morgan's Secretary
Lash LaRue
Circus Club Waiter / Henchman
Jane Adams
Circus Club Photographer
Thurston Hall
Josiah Waring
Ben Carter
Maxwell
Mabel Forrest
Wife
Barbara Bates
Hat Check Girl
Chester Clute
Train Conductor (uncredited)
Deanna Durbin
Nikki Collins / Margo Martin
Ralph Bellamy
Jonathan Waring
David Bruce
Wayne Morgan
George Coulouris
Mr. Saunders, Circus Club Manager
Allen Jenkins
Danny (Waring chauffeur)
Dan Duryea
Arnold Waring
Edward Everett Horton
Mr. Haskell
Patricia Morison
Joyce Willams, Morgan's Girl
Maria Palmer
Margo Martin, Circus Club Singer
Elizabeth Patterson
Aunt Charlotte Waring
Samuel S. Hinds
Mr. Wiggam, Waring Lawyer
William Frawley
Desk Sgt. Brennan
Jacqueline deWit
Miss Fletcher, Morgan's Secretary
Lash LaRue
Circus Club Waiter / Henchman
Jane Adams
Circus Club Photographer
Thurston Hall
Josiah Waring
Ben Carter
Maxwell
Mabel Forrest
Wife
Barbara Bates
Hat Check Girl
Chester Clute
Train Conductor (uncredited)
Deanna Durbin
Nikki Collins / Margo Martin
Ralph Bellamy
Jonathan Waring
David Bruce
Wayne Morgan
George Coulouris
Mr. Saunders, Circus Club Manager
Allen Jenkins
Danny (Waring chauffeur)
Dan Duryea
Arnold Waring
Edward Everett Horton
Mr. Haskell
Patricia Morison
Joyce Willams, Morgan's Girl
Maria Palmer
Margo Martin, Circus Club Singer
Elizabeth Patterson
Aunt Charlotte Waring
Samuel S. Hinds
Mr. Wiggam, Waring Lawyer
William Frawley
Desk Sgt. Brennan
Jacqueline deWit
Miss Fletcher, Morgan's Secretary
Lash LaRue
Circus Club Waiter / Henchman
Jane Adams
Circus Club Photographer
Thurston Hall
Josiah Waring
Ben Carter
Maxwell
Mabel Forrest
Wife
Barbara Bates
Hat Check Girl
Chester Clute
Train Conductor (uncredited)