Officer Karl Torok's best friend, Count Alvinczy, is elected president of the Hungarian cabinet. Meanwhile, Alvinczy's wife, Madalaine, receives a message from a blackmailer, threatening her husband. When the blackmailer winds up dead, Madalaine appears to be the most likely suspect. Torok, however, knows the case is more complicated than it seems and dedicates himself to revealing the truth behind the mystery.

Edmund Lowe
as Capt. Karl Torok

Karen Morley
as Countess Madalaine

Paul Cavanagh
as Count Peter Alvinczy

Gene Lockhart
as Gabor

Una O'Connor
as Julie, Hotel Maid

Russell Hicks
as Prefect of Police

Herman Bing
as Taxi Driver

Cornelius Keefe
as Paul Szegedy

Gloria Roy
as Katherine Szabo

Bodil Rosing
as Lisa