The Missing Madonna

A nun with a talent for nosing into other people's business turns detective in San Francisco. When Erma Duran, a member of the Older Woman's League, vanishes, the police assume she has simply gone off on her own. Sister Mary Helen is convinced otherwise and feels a strong sense of calling to look into the matter. Clues begin to pile up: a gold medal caught in Erma's bed frame and a puzzling reference to a Byzantine icon of the Madonna. The case grows more tangled once Police Inspector Kate Murphy takes part in the search.

Sister Mary Helen's good intentions lead her into the Mission District, where she comes face to face with a violent death.