Socialite Charlotte Borden is brutally attacked then brought to the hospital by a man the police assume is her attacker. Jamie Vail, SFPD's Sex Crimes Inspector, recognizes the man as her adopted son's biological father. With Charlotte in a coma, Jamie races to uncover the girl's last waking moments. But every clue leads home, where her son grows more and more elusive. Desperate to be wrong, Jamie must dig deep before her son lands behind bars, or worse.