Bruce Bennett as Eric Lane - Agent 17

Joan Barclay as Marion Bronson

Monte Blue as Benjamin Arnold

Edward Earle as FBI Chief Maddox

Roger Williams as Henchman Nick Reagan

Jack Mulhall as Henchman Meggs

Earle Hodgins as Henchman Spike Hodgins

Frank Wayne as Henchman Pete

Henry Roquemore as Roger Bronson

Duncan Renaldo as Count Barksi

Hattie McDaniel as Jenny

Ed Cassidy as FBI Agent Wilks

Lois Wilde as Nightclub Blonde

Charles Williams as Nightclub Entertainer

Fred Parker as Wedding Violinist

Broderick O'Farrell as Minister

Budd Buster as Yard Worker with Truck

Dick Cramer as Agent-Driver (Car Chase)

Tom London as Agent-Passenger (Car Chase)