A frantic call from a witness whose Colorado safe house is breached sends US marshal Slade Brooks to Robyn Lowry's side at Christmastime. But when he reaches her, she doesn't remember him--or the crime she witnessed. With the trial just days away, someone won't stop until Robyn's dead. And while she might recover her memory in time, keeping Robyn alive long enough to testify is Slade's hardest mission.