When religious fanatic Steven Mullan is murdered, Lewis investigates celebrity atheist Tom Rattenbury and his family, who had been attacked by Mullan.

When a worker at a missile factory is murdered, Bright wants the case resolved quickly, but Endeavour remains unconvinced that the crime is such an open-and-shut case.

For years after her father’s disappearance, the beautiful Miss Mary Morstan receives anonymously every year one large and valuable pearl. When, finally, an invitation arrives to meet the mysterious pearl-giver,…