Chameleon — William X. Kienzle

NUN UNDER THE GUN

Found murdered: a sister who isn't a nun, but whose sibling is. The dead hooker, Helen Donovan, was shot at the shrine of her sister's convent, dressed in a habit. No clues, no motive, and scant leads present the police with a parish puzzler -- unless the most unlikely scenario is true: that the killer mistook the hooker for her sister, Sister Joan Donovan.

Prodded by curiosity, Father Robert Koesler attends the wake -- and is flooded with suspicion. He's soon swept into a bizarre and chilling case of multiple murder that begins with a nun under the gun and ends with Koesler under a cardinal's cassock...