A rich widow is found dead in her apartment in Helsinki due to gas poisoning. The incident is initially thought to be an accident, but inspector Palmu notices that the murderer made a mistake, and so Palmu, Kokki and Virta begin the investigation: who had come to the apartment through the balcony door and opened the gas tap while Mrs. Skrof was asleep?
Genres:
Joel Rinne as Palmu
Matti Ranin as Toivo Virta
Leo Jokela as Väinö Kokki
Elina Salo as Kirsti Skrof
Pentti Siimes as Kurt Kuurna
Saulo Haarla as Kaarlo Lankela
Risto Mäkelä as Mustapää
Henny Valjus as Alma Skrof
Aino Mantsas as Iiri Salmia
Toivo Mäkelä as Lanne
Pehr-Olof Sirén as Doctor
Pia Hattara as Hallamaa
Rauha Rentola as Anna
Kullervo Kalske as Ara
Esko Mannermaa as Hakanen
Kirsti Ortola as Janitor's Wife
Oiva Luhtala as Janitor
Esko Salminen as Leppä
Liisa Roine as Vesa
Rose-Marie Precht as Pihlaja
Uti Saurio as Pentti Lanne
Laila Rihte as Cleaner
Jarno Hiilloskorpi as Postman
Tauno Söder as Homicide Detective
Leo Pentti as Homicide Detective
Rauni Miettinen as Waitress
Severi Seppänen as Butler
Oiva Sala as Drunk
Kauko Kokkonen as Police Officer
Yrjö Tähtelä as Young Man in Metropol
Varma Lahtinen as Mrs. Lanne
Enni Rekola as Domestic Worker
Paavo Hukkinen as Homicide Detective (uncredited)
Evita Wager as Young Kirsti Skrof (uncredited)
Seppo Haukijärvi as Postal Worker (uncredited)
Elina Ollikainen as Young Woman in Metropol (uncredited)
Lauri Ahokas as Man Holding Kuurna (uncredited)
Seija Silfverberg as Dancer (uncredited)
Tuukka Soitso as Man in Lineup (uncredited)
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