St. Agatha's College in Cambridge, England, provides the setting for nurse Imogen Quy's investigation into a series of deaths connected to the special library called the Wyndham Case, which has a strange and possibly violent legacy.

Jill Paton Walsh, CBE, FRSL (born 29 April 1937) is an English novelist and children's writer. She may be known best for the Peter Wimsey–Harriet Vane mysteries that have completed or continued the work of Dorothy Sayers.