Tragedy has knocked on the door of the Delaney family more than once, and now Kellie Delaney must face it once again when her twin brother dies in a suspicious accident in Wales. Her grief turns to shock and then to rage when she learns that Connor had been working undercover for British Special Forces and that his death was no accident. While going through his effects Kellie discovers puzzling notes about an Irishman named Tom Whelan. She begins to ask questions, which are met first with condescension and then with silence. Who is responsible for the death of Connor Delaney? Who is tracking Kellie's every movement? Who wants her silenced?