Beneath Dark Water — Nancy Connor

A child is missing. But does anybody care?

Her name may be Talia, or Rachael, or Nico, but to Sherry Henderson, the little girl who shows up unexpectedly on her doorstep one day is simply Child. Sherry's own child is dead, killed in a random terrorist bombing, yet caring for Child somehow helps Sherry fill the aching void in her heart.

Until Child abruptly disappears.

To the police and social services, Child is just another twelve-year-old runaway, of no particular importance. Not even Child's real parents, once Sherry tracks them down, seem too concerned about what has become of her, and Sherry's own, highly judgmental family strongly disapproves of her unhealthy obsession with this lost little girl.

But Sherry will not give up. Nothing, not even menacing letters and phone calls, can stop her from searching tirelessly for the missing girl, venturing deep into dangerous city streets, where no sensible suburban mother would set foot, only to discover that, in order to rescue Child, she must also find the truth about her own daughter's death.