An edgy female police detective... An ambitious FBI special agent. Together they are at the heart of the ticking-clock investigation for a psychopathic serial killer. The bond they forge in this crucible sets the stage for high-stakes suspense. Detective Kara Quinn, on leave from the LAPD, is on an early morning jog in her hometown of Liberty Lake when she comes upon the body of a young nurse. The manner of death shows a pattern of highly controlled rage. Meanwhile in DC, FBI special agent Mathias Costa is staffing his newly minted Mobile Response Team. Word reaches Matt that the Liberty Lake murder fits the profile of the compulsive Triple Killer. It will be the first case for the MRT. This time they have a chance to stop this zealous if elusive killer before he strikes again. But only if they can figure out who he is and where he is hiding before he disappears for another three years. The stakes are higher than ever before, because if they fail, one of their own will be next...

Something mysterious is killing the wildlife in the mountains just south of Tucson. When a college intern turned activist sets out to collect her own evidence, she, too, ends up dead. Local law enforcement is slow to get involved. That’s when the mobile FBI unit goes undercover to infiltrate the town and its copper refinery in search of possible leads. Quinn and Costa find themselves scouring the desolate landscape, which keeps revealing clues to something much darker—greed, child trafficking and more death. As the body count adds up, it’s clear they have stumbled onto much more than they bargained for. Now they must figure out who is at the heart of this mayhem and stop them before more innocent lives are lost.

A bomb explodes on a sunset charter cruise out of Friday Harbor at the height of tourist season and kills everyone on board. Now this fishing and boating community is in shock and asking who would commit such a heinous crime—the largest act of mass murder in the history of the San Juan Islands. Forensic profilers know there are two types of domestic terrorists: those who use violence to instill fear for political purposes but stop at murder because it detracts from the cause, and those who crave attention and are willing to maim and murder for their own agenda. Accused of putting profits before people after leaking fuel that caused a massive fish kill, the West End Charter company may itself have been the target. But as special agent Matt Costa, detective Kara Quinn and the rest of the FBI team begin their investigation, they discover that plenty of people might have wanted someone dead on that yacht. Now they must track down who is responsible and stop them before they strike again.

For three years, women have been disappearing—and eventually turning up dead in the small bayou town of St. Augustine, Louisiana. Police detective Beau Hebert is the only one who seems to care, but with every witness quickly silenced and a corrupt police department set on keeping the cases unsolved, Beau’s investigation stalls at every turn. With nobody else to trust, Beau calls in a favor from his friend on the FBI’s Mobile Response Team. While LAPD detective Kara Quinn works undercover to dig into the women’s murders and team leader Matt Costa officially investigates the in-custody death of a witness, Beau might finally have a chance at solving the case. But in a town where everyone knows everyone, talking gets you killed and secrets stay buried, it’s going to take the entire team working around the clock to unravel the truth. Especially when they discover that the deep-seated corruption and the deadly drug-trafficking ring at the center of it all extends far beyond the small-town borders.

When a key witness goes missing, Quinn and Costa must find her before a killer silences her for good… Detective Kara Quinn is back in Los Angeles to testify against a notorious human trafficker, finally moving past the case that upended her life. But when the accused is shot by a masked man in broad daylight, the chaotic scene of the crime turns up few reliable bystanders. And one witness—a whistleblower who might be the key to everything—has disappeared. After the prosecuting DDA is stabbed to death, it’s clear that anyone who knows too much about the investigation is in danger, and tracking down the witness becomes a matter of life or death. With government corruption running rampant and someone on the inside trying to pin anything they can on Kara, she trusts nobody except FBI special agent Matt Costa and a handful of allies. But when explosive secrets begin to surface within the LAPD and FBI, Kara questions everything she thought she knew about the case, her colleagues and the life she left behind months ago. Now Quinn and Costa must race to find the missing witness and get to the bottom of the avalanche of conspiracies that has rocked LA to its core…before it's too late.

No matter how far you run, some pasts never let you go… Two people were murdered—at the exact same time, in the same gruesome manner, bodies covered in the same red poppies…but on opposite sides of the country. With Detective Kara Quinn investigating in Oregon and Special Agent Matt Costa in Virginia, the Mobile Response Team digs deep to uncover more about each victim. What is the link between the two, and why were they targeted? Yet their search unearths more questions than answers—until they meet Riley Pierce, the only person still alive who might be able to help them find the killers. Soon, it becomes clear this case is nothing like they’ve seen before as their investigation leads them to the hallowed grounds of Havenwood—an eerily beautiful place rooted in a terrifying past. As more bodies turn up, all tied to the same community, Kara and Matt are desperate to piece the puzzle together before Havenwood’s leader sacrifices everything to keep her secrets buried.