A New York Times Bestselling Author A Maggie Hope Mystery . Book 4 World War II rages on across Europe. Maggie Hope, home from an undercover mission in Berlin, settles down to teach at her old spy training camp and to heal from scars on her body and heart. Yet Maggie is quickly drawn into another web of danger and intrigue. When three ballerinas fall strangely ill in Glasgow - including one of Maggie's dearest friends - Maggie partners with MI-5 to uncover the truth behind their unusual symptoms. -- provided by publisher.