PASSPORT TO TREASON is a fun, densely-plotted little British thriller which heavily emulates the American detective noir films of the 1940s; imported Canadian lead Rod Cameron even contributes a voice over narrative in the opening scenes. It's a fairly standard film of its type, but it has a dense little plot and plenty of suspense to see it through, plus a cracking supporting cast.
The tall and pudgy Cameron makes for an imposing presence as the private eye lead; more of a heavy than a hero, he slugs and pushes his way through the villainous members of the plot, who are part of an Italian gang determined to thwart the efforts of a 'peace organisation' of some type. Along the way, he hooks up with a pre-Bond Lois Maxwell, who is at her most beautiful and intelligent in this film.
There are fist-fights a-plenty, alongside character twists and various other scenarios which work out well. Fans of the genre will know exactly what they're in for and they won't be disappointed. The supporting cast includes Clifford Evans (THE 20 QUESTIONS MURDER MYSTERY) as the leader of the slightly bizarre 'peace organisation' and Douglas Wilmer (THE BRIDES OF FU MANCHU) as a doctor. Ballard Berkeley plays one of his stock policeman roles and there's a minor part for popular Canadian TV actor John Colicos (who looks very young) as a thug. PASSPORT TO TREASON certainly isn't a work of high art but it's a lot of fun all the same.