From bestselling author Mike Omer comes the first in a new series full of the psychological twists and police procedural turns that his fans have come to know and love. Lieutenant Abby Mullen is no stranger to crisis. As the hostage negotiation instructor for the NYPD, she deals with worst-case scenarios every day. Nothing fazes her anymore. That all changes when she gets a call from Eden Fletcher, a fellow survivor of the infamous Wilcox cult. The two haven't spoken since the night of a tragic, fiery massacre, when their paths diverged. But now Eden needs Abby's help: someone has kidnapped her son and is demanding a $5 million ransom. As Abby throws herself into the case, she can't help but wonder why the kidnapper has targeted Eden. But Eden refuses to talk. She's silent about the relics of their shared past hanging on her walls. About the kidnapper's possible motives. About what's happened in the years since she and Abby parted ways. As the truth closes in, Abby realizes that her past may not be as far behind as she thought...and it's come home to collect.

New York Times bestselling author Mike Omer returns with chilling twists and turns for a hostage negotiator with a dark past in this explosive second installment of the Abby Mullen Thrillers. As a child, Abby Mullen escaped the insidious Wilcox cult when it literally went down in flames. Years later, she's the NYPD's best hostage negotiator and a mother. She thought the worst part of her life was behind her. Until now. Armed conspiracy theorists called the Watchers have attacked the local high school-and taken her daughter hostage. With the delusional Watchers holding her child at gunpoint, the unflappable Abby might be at her breaking point. But the clock is ticking on her daughter's life, and she has no choice but to negotiate with the paranoid group and discover their leader's secret before it's too late. As Abby peels back the layers of mystery surrounding the Watchers, there's always another puzzle underneath. And it seems to be leading back to the dark past she's spent her whole life trying to forget.

In this conclusion of the Abby Mullen Thrillers by the New York Times bestselling author of A Killer's Mind, a hostage negotiator has one last chance to stop a deadly threat from her past. When a series of suspicious fires leaves multiple victims dead in their homes, NYPD hostage negotiator Abby Mullen knows in her bones that the terrors of her childhood have returned. As a young girl, she narrowly escaped a fire set by Moses Wilcox, a fanatical cult leader who's been presumed dead for thirty years. These murders have his fingerprints all over them. Meanwhile, razor-sharp criminal profiler Zoe Bentley is investigating the arsons-but she's never seen an offender like this. Zoe needs insight from someone who understands the mind of a cult leader. Someone like Abby Mullen. As the unlikely duo teams up on the case, it's time for Abby to face the memories she's always wanted to forget: the cult that defined her childhood, the fire that killed her family, and the man who engineered it all. The race is on to catch a killer-even if it means braving the fiery wreckage of Abby's past.

After a year in captivity, a kidnapped child escapes—only to reveal horrific truths that lead her psychologist on a race against time in this thriller from New York Times bestselling author Mike Omer. When eight-year-old Kathy Stone turns up on the side of the road a year after her abduction, the world awaits her harrowing story. But Kathy doesn’t say a word. Traumatized by her ordeal, she doesn’t speak at all, not even to her own parents. Child therapist Robin Hart is the only one who’s had success connecting with the girl. Robin has been using play therapy to help Kathy process her memories. But as their work continues, Kathy’s playtime takes a grim turn: a doll stabs another doll, a tiny figurine is chained to a plastic toy couch. All of these horrifying moments, enacted within a Victorian doll house. Every session, another toy dies. But the most disturbing detail? Kathy seems to be playacting real unsolved murders. Soon Robin wonders if Kathy not only holds the key to the murders of the past but if she knows something about the murders of the future. Can Robin unlock the secrets in Kathy’s brain and stop a serial killer before he strikes again? Or is Robin’s work with Kathy putting her in the killer’s sights?

From Washington Post and Amazon Charts bestselling author Mike Omer comes the chilling conclusion to Zoe Bentley’s decades-long nightmare. A murderer who drinks his victim’s blood? FBI profiler Zoe Bentley and Agent Tatum Gray thought they’d seen it all, but this young woman’s barbaric murder is especially hard to stomach. They didn’t expect to work this case. But vampirism aside, the murderer’s MO is identical to that of Rod Glover—the serial killer who’s been pursuing Zoe since childhood. Forensics reveals the murder to be his work, but not his alone; desperate to fulfill his sick purpose, he has taken on an equally depraved partner. Zoe’s own frustration grows after another woman turns up dead and drained—and another goes missing. Time is running out: Zoe knows her own death will be the climax of Glover’s sinister play, which has been unfolding for twenty years. To stop Glover and his vile partner, she’ll need to plunge deep into their motives; but this means drawing ever closer to becoming another casualty of a dark, dark thirst.

A forensic psychologist fights a mental war against two serial killers in this disturbing thriller from Mike Omer, Washington Post and Amazon Charts bestselling author of A Killer's Mind. An online video of a girl clawing at the ceiling of her own grave could be the worst thing FBI forensic psychologist Zoe Bentley has ever seen. Perhaps even more disturbing is the implication of the video's title: "Experiment Number One." Zoe and her partner, Special Agent Tatum Gray, work as fast as they can to find the monster behind the shocking video, but soon another one shows up online, and another girl turns up dead. Meanwhile, a different murderer is on Zoe's mind. Rod Glover has been tormenting her since childhood, and his latest attack is a threatening photo of himself with Zoe's sister. As Glover's threats creep toward action, Zoe's torn between family and duty. Zoe must think fast to prevent another murder. With her own family's safety on the line, Zoe feels she's never been in more danger. And while she's always known her job could send her to an early grave, she always assumed she'd be dead first.