When a traumatized girl, who has been missing for 3 years, is dropped off by a stranger, Tara's obsession with Blackhorse clouds her judgment. What happened to this girl who will speak to no one but seems to find comfort in Tara? When the hospital reports that the girl has gone missing once again, Tara and Bob remain at odds over who is responsible. When Tara's judgment almost gets her partner killed Tara reconsiders her future, but a visit by the mysterious little girl convinces Tara she needs to stay for a greater purpose.