A man and his ship are sunk in Lake Constance and the dead man's son is missing. For the detectives, he is the prime suspect. Until an anonymous tip-off about a prisoner hidden in a box turns up...
as Elena Barin
as Achim Schatz
as Britta Heinemann
as Hanno Kienle
as Lars Reimann
as Stefan Eisel
as Melanie
as Eva Raddatz
as Dr. Müller
as Coroner
as Henry Budde
as Friedrich
as Matze
as Stefan
as Moritz
as Lars
as Christian
as Policeman
as Nadeschka
as Mrs. Stadler
as Chan-Wook
as Herbert Schneider
as Eva Raddatz
as (uncredited)