A woman is found murdered in a closed amusement park. A young couple who happen to be there at the same time become, without their knowledge, suspects for the murder. They are chased by a large number of police but only Martin Beck believes them to be innocent.
as Martin Beck
as Lennart Kollberg
as Gunvald Larsson
as Kasper
as Mårds kvinna
as Herrgott Nöjd
as Kia
as Kapten Mård
as Greta Hjelm
as Kaj Sundström
as Eva
as Cecilia Sundström
as Polis 1
as Ulla
as Kia (voice) (uncredited)
as Stugägare (uncredited)
as Hector
as Gunnar Danielsson
as Stig Åke Malm
as Sigbrit Mård
as Mohlin
as Mats
as Rick
as Obducent
as Elofsson
as Ishockeytränare
as Värdinna
as Bussförare
as Polis 2
as Nyhetsreporter (uncredited)
as Nyhetsankare (uncredited)
as Servitris (uncredited)