Strike and Robin are hired to investigate a murder involving a creator of a cult TV cartoon and an anonymous online troll known as "Anomie."
Edie Ledwell, co-creator of the cult TV cartoon The Ink Black Heart, asks Robin to uncover the identity of her online harasser, "Anomie."
As Robin goes undercover, Barclay finds himself at risk, and Strike is pulled into Charlotte's messy divorce.
Robin and Strike make a major breakthrough, having eliminated several suspects. Robin's cover is blown, and Strike stays the night at her new flat.
As Strike and Robin inch closer to uncovering Anomie’s identity, the agency is targeted in a devastating attack. Then, Robin puts herself at risk to prevent Anomie from claiming more lives.
