November, 1942. World War II is raging, and former spy Maggie Hope knows too much: what the British government is willing to do to keep its secrets, who is lying, who the double-crossers are. She knows exactly who is sending agents to their deaths. These are the reasons Maggie is isolated on a remote Scottish island, in a prison known as Killoch Castle. When one of her fellow inmates drops dead in the middle of his after-dinner drink—he’s only the first. As victims fall one by one, Maggie will have to call upon all her wits and skills to escape—not just certain death . . . but certain murder. For what’s the most important thing that Maggie Hope knows? She must survive. “The colonel sums it up best on page ten: ‘If you take a pretty girl and teach her how to kill, it can cause problems.’ Not just problems— action and nonstop surprises. I loved this book!” “Another literary tour de force . . . From the book’s perfectly calibrated plot to its incisively etched characters, everything is handled with perfect finesse by the author.” “One pleasure of a mystery series is connecting with a character that changes and grows with each novel. . . . Maggie’s intelligence and loyalty to the war effort continue to evolve in [Susan Elia] MacNeal’s series. . . . Solid twists keep the plot of churning until the surprise finale.” “A mystery . . . tailor-made for readers in the post-election, #MeToo era. . . . If you love a tricky puzzle that requires you to keep track of multiple alibis over time, this is your summer read.” “Evocative.” “MacNeal uses [Agatha] Christie’s as a framework for a character-driven mystery/thriller that successfully emulates the original.”