Carl Grünwald

Muž bez srdce

Franz W. Koebner, Josef Horňák

Karel Lamač, Theodor Pištěk

Das Geheimnis des Amerika-Docks

E.A. Dupont

Gustav Botz, Carl Grünwald

James Mistoll, one of the owners of a factory, and working on a process to turn copper ore into radium, falls from a window on the fourth floor and dies; This was no accident, but a murder. A detective sends his assistant, Barnes, to investigate and soon the number of suspects from within the company multiplies.