The Bridesmaid

Philip Wardman is disgusted by murder. He cannot tolerate violent films or the local news, and when his friends discuss such things he often leaves the room. At his sister's wedding, Philip becomes infatuated with a strange, silver-haired woman named Senta Pelham. They sleep together after the reception, and Philip finds himself falling headfirst into obsessive, all-consuming love. He wants to marry Senta and live an ordinary life—but before they can, she has a murderous idea.
 
To prove the unconventionality of their love, Senta proposes that each of them commit a murder. Shocked by the idea, but unable to resist his beloved, Philip is drawn into a maze of violence and deceit—and is horrified to find that he feels quite at home.