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.
On a tourist trip abroad the passengers on the coach witness an assassination attempt on the President Hurkas. One of the tourists has evidence against the perpetrators, and is killed when the coach reaches Sweden. Another passenger observes how one of the perpetrators is picked up by a yellow car. She is kidnapped and locked up in a mental hospital.
Susanne, uma fotógrafa de moda que não consegue se esquecer do ex-amante, vai a Gotemburgo à procura dele. Com ela vai Doris, sua jovem modelo que brigou com o namorado e se atrasa para o trabalho quando conhece um cônsul que lhe oferece joias.
