Once she was Professor Mary Naughton, investigative reporter, teacher, and free spirit. Now she is Sister Agatha of Our Lady of Hope, a cloistered, financially-struggling monastery in New Mexico. As an extern-a nun who handles her order's dealings with the outside world-she is used to having her faith and newly-acquired patience tested. But when popular chaplain Father Anselm is poisoned to death in the middle of Mass, Sister Agatha has to bring all her worldly skepticism and savvy instincts to uncover the truth before scandal and unjust suspicion destroy Our Lady of Hope's future. She's up against a hostile local sheriff, an ex-lover who's never forgiven her for 'abandoning' their life together. She's got no shortage of suspects-with-secrets outside-and inside-the monastery. And she'll have to race the clock to stop one remorseless murderer before there's more hell to pay.