Justin L. Olsen

Teenaged Internet bully Ivy Lake fell off a cliff, and few people cared...except her mentally challenged 18-year-old stepbrother, Tommy. He loved her in spite of her cruelty. He's distraught and doesn't understand why his blended family is falling apart. After a year, the police still have no answers: Ivy could have jumped, she could have been pushed, or it could have been an accident. With too many suspects and not enough evidence, the investigation has grown cold.

Something sinister is going on in Baronville. The rust belt town has seen four bizarre murders in the space of two weeks. Cryptic clues left at the scenes - obscure Bible verses, odd symbols - have the police stumped. Amos Decker and his FBI colleague Alex Jamison are in Baronville visiting Alex's sister and her family. It's a bleak place: a former mill and mining town with a crumbling economy and rampant opioid addiction. Decker has been there only a few hours when he stumbles on a horrific double murder scene.

It's a pub in lower Manhattan, run by the Finnegan family for generations and now owned by Kieran and her three brothers. Kieran Finnegan, who still works there whenever she can, has become a criminal psychologist - a fitting reaction, perhaps, to her less-than-lawful past. Meanwhile, New York's Diamond District has been hit by a rash of thefts. No one's been killed - until now.