Murder in the Mews

How did a woman holding a pistol in her right hand manage to shoot herself in the left temple? What was the link between a ghost sighting and the disappearance of top secret military plans? How did the bullet that killed Sir Gervase shatter a mirror in another part of the room? And should the beautiful Valentine Chantry flee for her life from the holiday island of Rhodes and the ever more complicated love triangle she has created there?