Martin Beck
Gunvald Larsson
Lena Klingström
Joakim Wersén
Inger
John Banck
Annika
Erik Lindgren
Jens
Magnusson
Ernström
Loftegård
Grannen
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.
