A serial killer that decapitates people is on the loose in the Stockholm subway. Martin Beck and his colleagues try to catch the killer, while the panic in the city increases.
Martin Beck
Gunvald Larsson
Lena Klingström
Joakim Wersén
Inger
John Banck
Annika
Erik Lindgren
Jens
Magnusson
Ernström
Loftegård
Grannen
