Saunas, love and a ladleful of murder...
A cold-blooded killer strikes at the hottest the head of a sauna-heater company is murdered ... in the sauna. Who has turned up the temperature and burned him to death?
The evidence points in the direction of Anni Korpinen – top salesperson and potential successor at Puhti Saunas. And as if hitting middle-age, being in a marriage that has lost its purpose, and struggling with work weren' t enough, Anni realizes that she must be quicker than both the police and the murderer to uncover who is behind it all – before it' s too late...