A Vow of Devotion (Sister Joan, No 6) - Hardcover

With a little help from the ever-agnostic Detective Sergeant Mill, Sister Joan once again finds herself the reluctant sleuth when she discovers first a knife, then a foreboding blood-red rose, and finally the bludgeoned body of a young novitiate - all within the walls of holy sanctuary. Will the murderer kill again?
One of the postulants knows more than she's telling, and Sister Joan, as usual, has pieced together more than she lets on. Balancing her vows to the Lord against her unerring investigative instincts, our detective-nun must find the killer before he strikes again.