The Blue Cross

Aristide Valentin, the head of the Paris Police, is pursuing the clever criminal Flambeau, who is suspected of planning to steal religious artifacts at a London conference. During his journey, Valentin encounters Father Brown and learns he is carrying a valuable "Blue Cross" cross. As Valentin tries to monitor Father Brown, a tense chase unfolds to prevent a potential theft, promising a suspenseful tale of intrigue and deception.