A young prostitute, Gullan Svan, is murdered one night. The police suspects that the murderer is a student, since she had a lot of students as customers. The murderer stole a picture of Gullan after he killed her, a picture which later is found in a rented tuxedo when the tuxedo is returned. Four students decide to solve the case, but it seems that the truth is even closer than they first suspected...
as Bo Hagberg
as Torsten Hertgren
as Robert Croona
as Gustaf Eriksson
as Kalle Larsson
as Berit Lange
as The Soap Girl
as Maud
as Heliga Birgitta
as Pettersson
as Gullan Svan
as Criminal Detective
as Nilheim
as Professor of Anatomy
as Österholm
as Customer in Barber Shop
as Antique Dealer Bladh
as Criminal Assistant (uncredited)
as Dr. Berg (uncredited)
as Singing Servant at Flustret (uncredited)
as Sister Vendela (uncredited)
as Teacher (uncredited)
as Kalle's Date (uncredited)
as Cathedral Janitor (uncredited)
