People on a train get murdered. Who is the murderer? Everybody on the train is a suspect. One of them is the homosexual dope fiend played by Heinz Hopf. Things might get out of hand in this exciting thriller in true Hitchcockian style.

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Main Cast: Allan Edwall, Heinz Hopf, Björn Gustafson, Lars Ekborg, Elsa Prawitz, Nils Hallberg, Erik Hell, Hans Bendrik, Ewa Strömberg, Britta Pettersson

Director: Arne Mattsson

Writers: Per Wahlöö, Arne Mattsson, Maj Sjöwall

Editor: Carl-Olov Skeppstedt

Cinematographer: Lasse Björne

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