None of her training prepares astronaut Natasha Stark for what she wakes up to three weeks after her groundbreaking space voyage: a target on her back?and no memories. But there's something oddly familiar about the FBI agent who rescues her. Christopher Barton can't believe he drew the mission of safeguarding his long-ago fiancée and her daughter?a child he has every reason to believe is his. To learn the truth, though, he has to help Natasha regain her memory. But with threats mounting against the family he hopes to join, Chris is running out of time to take down the assailants before they kill the woman he never forgot and the child he never knew existed.