Isabel Dalhousie helps a new friend discover the identity of her father. Jane, a visiting Australian philosopher on sabbatical in Edinburgh, has more questions than answers. Adopted at the age of six, she knows little about her father, other than he was a student in Edinburgh years ago. Always up for a challenge, Isabel is more than happy to help.

Isabel becomes involved in a delicate paternity case in the twelfth installment of the beloved Isabel Dalhousie Series. Isabel finds herself befriended by Patricia, a single mother whose son, Basil, goes to school with Isabel's son. Isabel discovers that Basil is the product of an affair Patricia had with a well-known Edinburgh organist, also named Basil, who was, rumor has it, initially reluctant to contribute financially to the child's upkeep. Though...