In the middle of the summer holidays, the body of a drowned man with ligature marks on his wrists is recovered from Tammerkoski river. The investigation by Koskinen's team is further strained by the hit-and-run case of a dubious music manager and the mysterious Carl Friedrich. When a new body is found in Lake Näsijärvi, the connection between the victims is made clear.

Eero Aho
as Koskinen

Maria Ylipää
as Lundelin

Turkka Mastomäki
as Pekki

Jon Jon Geitel
as Kaatio

Verneri Lilja
as Luttinen

Anna Ackerman
as Taru

Ville Majamaa
as Hukkapee

Mari Turunen
as Tanse

Petra Karjalainen
as Raija Koskinen

Samuel Kujala
as Antti Koskinen