A secret agent goes after the gang that stole the crown jewels of a European monarchy.

Directed by: Ford Beebe & Clifford Smith
Written by: Wyndham Gittens & Leslie Swabacker & Norman S. Hall & Ray Trampe
Runtime: 294 minutes
Tagline: KILLERS BEWARE! Secret Agent X-9 is on the trail!
Cast:
Scott Kolk Scott Kolk
Agent Dexter (X-9) 
Jean Rogers Jean Rogers
Shara Graustark 
Monte Blue Monte Blue
Baron Michael Karsten 
Henry Brandon Henry Brandon
Blackstone 
Lon Chaney Jr. Lon Chaney Jr.
Maroni 
David Oliver David Oliver
Pidge