The Ninth Guest

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The Ninth Guest
Original poster art
Directed by	Roy William Neill
Written by	Garnet Weston
Based on	The Ninth Guest by Owen Davis
Starring	Donald Cook Genevieve Tobin
Cinematography	Benjamin H. Kline
Edited by	Gene Milford
Production company	Columbia Pictures
Distributed by	Columbia Pictures
Release date	January 31, 1934 (1934-01-31)
Running time	65 minutes
Country	United States
Language	English

The Ninth Guest, sometimes abbreviated as The 9th Guest, is a 1934 American pre-Code murder mystery film directed by Roy William Neill and starring Donald Cook and Genevieve Tobin.

The film is an adaptation of the 1930 Broadway play The Ninth Guest by Owen Davis, which in turn is based on the 1930 novel, The Invisible Host, by Bruce Manning and Gwen Bristow. The book, play and film all predate Agatha Christie's extremely successful 1939 novel And Then There Were None, which has a similar plot.