From New York Times best-selling author Alexander McCall Smith, creator of the sensationally popular No. 1 Ladies' Detective Agency series, comes the second mystery starring the ever-ethical and undeniably charming Isabel Dalhousie. Working at her niece's deli, Isabel notices a customer named Ian, who is avoiding chocolate-doctors says it's bad for the new heart he recently received. Ian is haunted by memories he can't place. Could his new heart be the cause?