A series of baffling murders among a group of imprisoned agents threatens the outcome of World War II in this chilling mystery from the <i>New York Times </i>bestselling author of <i>Mr. Churchill's Secretary</i>.<br><br> World War II is raging, and former spy Maggie Hope knows too much.<br><br>She knows what the British government is willing to do to keep its secrets.<br><br> She knows the real location of the planned invasion of France.<br><br> She knows who's lying. She knows who the double-crossers are. She knows exactly who is sending agents to their deaths.<br><br> These are the reasons Maggie is isolated on a remote Scottish island, in a prison known as Killoch Castle, out of contact with friends and family.<br><br> Then one of her fellow inmates drops dead in the middle of his after-dinner drink - and 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.<br><br> For what's the most important thing Maggie Hope knows?<br><br>She must survive.