Inside the abbey of a Benedictine monastery on tiny Egret Island, just off the coast of South Carolina, resides a beautiful and mysterious chair ornately carved with mermaids and dedicated to a saint who, legend claims, was a mermaid before her conversion. Jessie Sullivan's conventional life has been "molded to the smallest space possible." So when she is called home to cope with her mother's startling and enigmatic act of violence, Jessie finds herself...