Fleeing from a murder and family tragedy in her native England, Theo Bogart changed her name and built an undercover life in a close-knit San Francisco neighborhood. After a confrontation with a difficult neighbor, Theo fears her secrets are about to be uncovered after all. When the woman who threatened to expose her is murdered, Theo is embroiled in the kind of jeopardy she crossed an ocean to escape. Worse yet, Theo's grandfather unveils a glimpse of the shadowy world he once inhabited as an agent for the British Secret Service, bringing an even bigger breed of trouble—and another death—to Theo's doorstep. She finds herself fighting to protect herself, her family, and her new friends, suddenly aware that one of them might be a murderer.