FBI Special Agent Faith Bold, hospitalized and haunted by her encounter with a serial killer, is ready to retire—when Turk, a K9 German shepherd, himself traumatized, comes into her life. When a new serial killer strikes, leaving his victims at the bottom of isolated wells, Faith, this time with Turk at her side, will stop at nothing to hunt him down and save the next victim before it is too late.

Early one morning, DS Robin Butler is summoned to a crime scene. Not as a policeman, but as best friend to renowned meteorologist, Dr Finn Mason. The morning after studying an enormous storm, Finn has locked himself in a van. Bloodied, confused, and with no memory of how he came to be there. And alongside him - a dead body.

Harley, reeling from her being put on leave, from her long-term relationship falling apart, and from her father’s dying, is hardly ready to return to her hometown, to its long-buried secrets, and her tortured past. She spent her life escaping this small town—but, as she settles back in, she wonders: Might she have been wrong all this time? Yet as more bodies surface and as every clue leads to a dead end, Harley, clashing with her new partner, realizes she’s in a race against time.

The FBI is alarmed by the rash of killings on trains throughout the country, and they realize they have to put together a joint task force to tackle it. Through a partnership with the rail police, FBI Special Agent Cailtin Dare is chosen to spearhead the new unit designed to hunt killers using trains across the country.

After her messy divorce, Angelina Bonaparte refuses to let any man hold her back. She’s even opened a private eye practice to help other victims of relationships gone sour. So when she crosses paths with a detective who believes a crime scene is no place for a woman, she sets out to change his mind.

FBI Special Agent Claire King dies chasing a killer—and is resuscitated minutes later to realize she has changed. Dark images flash through her mind in a newfound power, visions leading her towards serial killers. But the riddles that plague her are obscured and conflicting, and Claire soon realizes that they may lead her to crack a case—or may just put her in the crosshairs of a killer.

DI Thomas Ridpath was on the up in the Manchester CID: a promising detective who captured a notorious serial killer. But 10 years later, he’s recovering from a serious illness and on the brink of being forced out of the police. Then people start dying, in an uncanny echo of his first case.

FBI Special Agent Eve Hope can’t escape the shadow of her notorious serial killer father—though he is jailed, the puzzle of the loving father of her childhood haunts her, and now, assigned to a copycat case, she is forced to face her worst memories. Can she stop this new killer before he claims a new victim—while saving herself from being swallowed by her past?

MMA champ-turned-FBI Special Agent and BAU specialist Dakota Steele is as tough as they come—and as brilliant, too, able to crack serial killers that no one else can.

Despite being a rising star in the BAU unit, FBI Special Agent Hailey Rock still lives in the shadow of her older sister, who remained in their small Midwestern town to become a police sheriff and who remains the favorite in their parents’ eyes. Hailey has not thought of her estranged family in ages, but when young women turn up dead in her hometown, the FBI dispatches Hailey to solve the case her sister cannot—and forces her to face demons, including that of her kidnapped sister, that Hailey wished she would never face again.

Morgan Stark, a brilliant doctor, is stunned when his hospital’s resident is found murdered, clearly the work of a serial killer. The FBI needs Morgan, with his medical expertise, to decipher the subtle medical clues that will lead to the killer—but can he crack the code before it’s too late?

Special Agent Sadie Price, a 29-year-old rising star in the FBI’s BAU unit, stuns her colleagues by requesting reassignment to the FBI’s remote Alaskan field office. Back in her home state, a place she vowed she would never return, Sadie, running from a secret in her recent past and back into her old one, finds herself facing her demons—including her sister’s unsolved murder—while assigned to hunt down a new serial killer.

With a family missing, and after four years off the police force, Chase Grant finds himself back in the midst of a criminal investigation. But as he teams up with the FBI and the US Marshals working this high-profile case, Grant will be forced to confront a past that he thought he was prepared to deal with. But if he can't overcome his memories, then it could mean the end of a missing family.

After a Sweet 16 ceremony, Reyna Clifton - the mother of the birthday girl - is found severely injured at the bottom of the grand staircase of the Regal Phoenix Resort and Spa. The Clifton family blames the resort for Reyna’s fall and sues for negligence. Daniel Mendoza and his firm are called in to defend the lawsuit, but when Mrs. Clifton is found dead in her hospital room, Daniel's suspicions arise.

When a new serial killer strikes, the FBI, stumped, turns to its brilliant forensic examiner and entomologist, Fiona Red, with her unparalleled genius and ability to offer insights at crime scenes based on her insect expertise. When another victim turns up in a stretch of rural woods covered in unusual bugs, Fiona knows right away that something doesn’t add up. In this master game of wits, Fiona may have finally met her match.