"The new idealistic welfare officer Helmi tries to improve conditions in "Sin Alley," but difficulties arise, particularly with the leader of the petty criminals, Jukka, whose son Reino also drifts into a life of crime."
Ansa Ikonen
as Helmi Heino
Tauno Palo
as Jukka Kyrö
Aku Korhonen
as Sokea-Hanski
Mirjam Novero
as Aliina Kyrö
Ella Eronen
as Juudit
Arvo Lehesmaa
as Frans Byman
Wilho Ilmari
as Oikeuden puheenjohtaja
Trina Taipale
as Raili
Elna Hellman
as Matilda Kivinen
Veli-Matti Kaitala
as Reino Kyrö
Leo Mikander
as Yrjö
Enni Rekola
as Johansson
Jalmari Rinne
as Syyttäjä
Uuno Montonen
as Muhonen
Rauha Rentola
as Esteri
Toivo Lahti
as Aleksi Alanen
Helge Ranin
as Doctor
Olga Tainio
as Huoltolautakunnan sihteeri
Urho Lahti
as Puolustusasianajaja
Tarmo Manni
as Virtanen
Eino Kaipainen
as Narrator (voice) (uncredited)
Topo Leistelä
as Jere (uncredited)
Veikko Uusimäki
as Väinö Karttunen (uncredited)
Anni Rönkkö
as (uncredited)
Erkki Kivikari
Kauno Laine
Martta Kontula
Annika Sipilä
Aarne Laine
Otto Noro
Leo Sarri
Anton Soini
Olavi Suominen
Edvin Kajanne
Felix Forsman
Director of Photography
Karl Fager
Production Design
Olavi Veistäjä
Writer
Jaakko Hurme
Heikki Aaltoila
Original Music Composer
Tuulikki Uskali
Hairstylist
Aira Samulin
Script Supervisor
Aarne Kajonterä
Gaffer
Anna-Liisa Riihimäki
Päivi Kosonen
Still Photographer
Makeup Artist
Siviä Friskberg
Pentti Riihimäki
Sulo Tammilehto
"B" Camera Operator
Matti Silvantie
Sound Assistant
Teppo Riihimäki
Assistant Camera
Bertil Holmström
Location Manager
Eka Karppanen
Title Designer
Arvo Murtokallio
Grip
Nils Gustafsson
Armas Vallasvuo
Editor
Yrjö Saari
Sound
Edvin Laine
Director
T.J. Särkkä
Producer