1920s. Cork, Ireland. The Reverend Mother regrets the bishop's decision to invite the five candidates for the position of Alderman of the City Council to join them for their annual retreat. Constantly accosted by ambitious, would-be politicians hoping to secure the bishop's backing, she's finding the week-long sojourn at the convent of the Sisters of Charity anything but peaceful. What she doesn't expect to encounter however is sudden, violent death.

When a body is discovered in the convent's apple orchard cemetery, blown to pieces by a makeshift bomb, it is assumed the IRA are responsible. But does the killer lie closer to home? Was one of the candidates so desperate to win the election they turned to murder? Does someone have a hidden agenda? Once again, the Reverend Mother must call on her renowned investigative skills to unearth the shocking truth.