When Professor Gerald Smaill, an American archaeologist, discovers a golden Byzantine cross in cave in Crete, a disembodied voice threatens him with death.
After an heiress makes her will out to the leader of a bogus religious cult and mysteriously falls to her death, Brown finds that he is the charlatan's alibi.
After a conservative judge is found shot to death in his garden, Father Brown sets out to prove that the outspoken socialist arrested for his murder is innocent.
A wealthy landowner in the West Country confesses to Father Brown that his adopted son has coerced him into dabbling into occultism in order to extend his life.
The search for a runaway girl leads Father Brown and his friend Flambeau to a struggling theatre company, replete with backstage gossip, ambitious actors, tempermental divas, mysterious visitors, and murder.
After a rash of robberies, the evidence implicates a gentle beekeeper as the notorious jewel thief whom the press has dubbed Michael Moonshine. Father Brown keeps faith in his friend, however, and unmasks the real murderer.
Father Brown and Flambeau come to the aid of Christabel Carstairs, the daughter of a famous coin collector, when she is shadowed by a mysterious figure dressed in a disguise and bent on blackmail.
When wealthy collector Brander Merton buys a Coptic chalice, he doesn't intend to meet the same fate as the relic's two previous owners. But after an arrow strikes him dead, Father Brown must expose the cup's supposed curse.
A decapitated man is found in a garden, and an eccentric American millionaire is suspected when he disappears. But then his severed head is discovered.
