A Vow of Devotion — Veronica Black

SACRED LOVE AND PROFANE MURDER
Two new postulants -- sunny, eager Bernadette Fawkes and prim, anxious Magdalen Cole -- have arrived at the Convent of the Daughters of Compassion to dedicate their lives to the Lord. A rare and blessed event...but Sister Joan must confess to less-than-perfect charity when she finds one of them brandishing a knife. Her unease darkens to horror after a midnight brush with a batlike figure on the chapel stairs, and the lethal bludgeoning of a nun who had changed beds with the fearful Magdalen.

From a visiting hermit to a caravan of New Age goddess-worshippers, the intrepid Sister Joan follows a trail of unholy relics toward a revelation that could destroy the convent's serenity -- and even her own life.