Kaasua, komisario Palmu!

Kaasua, komisario Palmu 1961 Gas, Inspector Palmu is a Finnish crime movie directed by Matti Kassila. The main cast of actors is the same as that of the first though some actors such as Elina Salo, Pentti Siimes and Aino Mantsas play different characters,

Mrs. Skrof, a wealthy and hated woman belonging to a religious sect, is found dead in her apartment. She died apparently from inhaling gas leaking from her cooker while under the influence of sleepmedication. Several details of the case lead Inspector Palmu to suspect that she was murdered, including a crooked soup pot, her unusually strong sleeping pills and the fact her dog has been killed by breaking its neck.In the film the murderer is revealed to be Kurt Kuurna. Although all the evidence points to Kaarle Lankela, the attempted suicide and false but accurate confession made by Kirsti Skrof taken from details that were given to her by Virta causes the whole affair to become untangled. ........

Source: Wikipedia