In this, the first Father Brown story, Hampstead Heath on a stormy day is transformed by Chesterton's brilliant and lurid description of the sky, creating a surreal background to this tale of pursuit. This story is unique among the Father Brown mysteries in that it does not follow the actions of the priest himself, who is here the pursued, but rather those of the French detective Valentin, the pursuer.
From the collection "The Innocence of Father Brown"
the incidental music is available on the Naxos label