Roger Quain, escorting two zoo-bound black panthers on the train from Milan to Paris, is unaware that a Western agent, Catherine Ullven, has hidden a microfilm in the collar of one of the animals. But when the train is derailed in the Swiss Alps and the panthers escape, she is forced to involve him in her mission, which now includes enemy agents hunting the microfilm, the animals, Catherine and Roger. Corrected from an original submission by Guy Bellinger.
Howard Duff
Märta Torén
Philip Friend
Robert Douglas
Philip Dorn
Walter Slezak
Kurt Kreuger
Aram Katcher
Ivan Triesault
Jay Barney
Otto Waldis
Carl Milletaire
Antonio Filauri
Carmela Restivo
Carlo Tricoli
Rudy Silva
Betty Greco
Peter Ortiz
Peter Applequist
Jack Chefe