Ray Danton as John Conrad, alias Johnny Salvo

Leigh Snowden as Maria Craven

Grant Williams as Don Kastner

Onslow Stevens as Chief Agent Alec Conrad

Raymond Bailey as Philip Bormann

Judson Pratt as Agent Maury Saxton

Jack Kruschen as Agent Pill Schwartz

Floyd Simmons as Agent Harris

Mel Welles as Milo

Alexander Campbell as Warden Lewis

Kaaren Verne as Mrs. Pulenski (as Karen Verne)

Maurice Doner as Mr. Pulenski

Jess Kirkpatrick as Bill MacReady

Arthur Hanson as Agent Parker

Richard H. Cutting as Agent Pomeroy

George E. Mather as Bus Station Attendant

Amapola Del Vando as Mama Gomez

Ezelle Poule as Mrs. Flynn