On the shores of Lyme Regis, where G.K. Chesterton takes his holidays, a strange sound haunts the night....  The sleuthing mice of Saint Wulfhilda's Abbey School are back for a seaside adventure in this third installment of The Sister Seraphina Mysteries! Join Sister Seraphina, Sister Alberta, Dominic, and Marigold as they investigate some mysterious happenings on their summer holiday-and learn unexpected lessons about the corporal works of mercy and the gift of imagination along the way.