Start with That Darkness. The body of fifteen-year-old Rachael Donahue--raised in foster homes and violently unapproachable--has been discovered at the bottom of a stairwell at Firebird, the secure facility for juvenile offenders. The girl's death comes with a disturbing twist--she may have been involved with a much older man. But Rachael's not the only resident to come to a dead end. Firebird's ten-year-old "wild child" has overdosed in the infirmary--back-to-back tragedies that appear to be terrible accidents. But Maggie and Jack suspect a cold-blooded murderer with an agenda. And as Maggie's ex-husband gets nearer to uncovering secrets that Maggie and Jack must hide, it becomes increasingly hard for them to protect a new and vulnerable victim.