When Isabel is asked to cover for vacationing Cat at her delicatessen, Isabel meets a man with a most interesting problem. He recently had a heart transplant and is suddenly haunted by memories of events that never happened to him.The situation piques her insatiable curiosity: Could the memories be connected with the donor’s demise? Naturally, Isabel’s friend Jamie thinks it is none of Isabel’s business. Meanwhile, Grace, Isabel’s housekeeper, has become infatuated with a man at her spiritualist meeting, and Cat brings home an Italian lothario. That makes for some particularly tricky problems–both practical and philosophical–for Isabel to unravel in this enormously engaging and highly unusual mystery.