Diskretion – Ehrensache

Heli Finkenzeller

As Mary Hopkins

Hans Holt

As Peter Parker

Ida Wüst

As Tante Carola

Ralph Arthur Roberts

As Mr. Hopkins

Theo Lingen

As Lord Benton

Fita Benkhoff

As Lilian

Paul Henckels

As Onkel Jerry

Rudolf Platte

As Herr auf Bestellung

Fritz Odemar

As Diener

Hans Hermann Schaufuß

As 1. Detektiv