Heino Ferch as Fritz Lang

Samuel Finzi as Peter Kürten

Johanna Gastdorf as Thea von Harbou

Michael Mendl as Anton Lang / Kürtens Vater

Thomas Thieme as Ernst Gennat

Maximilian von Pufendorf as junger Fritz Lang

Lisa Charlotte Friederich as Lisa Lang

Lena Münchow as Thea von Harbou (jung)

Alice Gruia as Maria Hahn

Philipp Baltus as Seymour Nebenzal

Rainer Galke as Ernst Genant jung

Jens Kipper as Kriminalassistent Müller

Winfried Küppers as Gefängnisdirektor Strassmann

Peter Harting as Pelz-Hotte

Christoph Bertram as Kriminalassistent Tölle

Dieter Rupp as

Dennis Scholz as Journalist Konopke