It’s barely been a month since the dramatic standoff that pushed Eden Cross to her limits, but she hasn’t had time to draw breath, let alone grieve her losses. As the newest addition to the FBI’s elite Behavioral Analysis Unit she must navigate the complexities of joining an established, tight-knit team. But her personal demons are never far behind, and the emotional scars from the Adamstown murders still cut deep.

When a brutal serial killer begins targeting social media influencers in New York City, she’s thrust face to face with evil once again. The killer’s signature is as chilling as it is plain: the victims’s lips have been sewn shut and the hashtag #shutup carved into their flesh. As the killer shows no signs of stopping, Eden’s relentless drive for the truth will put her at odds with her new boss and colleagues.

With pressure mounting and the body count rising, Eden and the team must reveal a killer who uses the power of social media to select the victims and broadcast their message. But the closer they get, the more the investigation threatens not just their fragile bonds, but also their lives.

In a race against time, can they stop the killer before the next victim is silenced forever?