A mysterious Catholic priest arrives at 221B Baker Street, only to utter the words 'if corpe' before dropping dead. Though the man's death is attributed to cholera, when news of a similar case reaches Holmes, he is convinced that the priests have been poisoned.

A mysterious Catholic priest arrives at 221B Baker Street, only to utter the words 'if corpe' before dropping dead. Though the man's death is attributed to cholera, when news of a similar case reaches Holmes, he is convinced that the priests have been poisoned.