B and B owner Bea Cartwright has taken on the responsibility of taking meals to ten visiting nuns, who are on retreat at the Water’s Edge Center for Spirit and Renewal on picturesque South Bass Island on Lake Erie. But the peace of the retreat is shattered when one of the nuns is found at the water’s edge—murdered. And when a second nun is killed, Bea and the other members of the League of Literary Ladies—Chandra, Kate, and Luella—start to wonder about eerie parallels with the Agatha Christie mystery classic, And Then There Were None.

Since Bea has the trust of the sisters, the local chief of police asks her and the other Literary Ladies to interview each of them. Expecting a confession may be asking for a miracle, but Bea hopes she can at least find the killer before another nun gets crossed off the guest list…