On the surface, Rachel Marin is an ordinary single mother; on the inside, she’s a fierce, brilliant vigilante. After an unspeakable crime shatters her life, she changes her identity and moves to a small town in Illinois, hoping to spare her children from further trauma...or worse. But crime follows her everywhere. When the former mayor winds up dead, Rachel can’t help but get involved. Where local detectives see suicide, she sees murder. They resent her for butting in - especially since she’s always one step ahead. But her investigative genius may be her undoing.

Twenty years ago, in the seaside town of Galveston, Texas, Annie Randall took her dog for a walk. The dog returned. Annie did not. When her body was found, cruelly broken and posed like a runner, there was only ever one suspect: Annie’s husband, Frank. Now he’s served his time and come home–but the locals won’t let him forget. Especially when there’s a new ‘running girl’ murder…

It’s the worst possible time for Detective Kerri Devlin to be involved in an all-consuming double-homicide case. She’s locked in a bitter struggle with her ex-husband and teenage daughter, and her reckless new partner is anything but trustworthy. Still, she has a job to do: There’s a killer at large, and a pregnant woman has gone missing. Once Devlin and her partner get to work, they quickly unearth secrets involving Birmingham’s most esteemed citizens. Each new layer of the investigation brings Devlin closer to the killer and the missing woman.

Fourteen years ago, prosecutor Jessica Yardley's husband went to prison for a series of brutal murders. She's finally created a life with her daughter and is a well-respected attorney. She's moving on. But when a new rash of homicides has her ex-husband, Eddie, written all over them - the nightmares of her past come back to life.

Forensic psychologist and single mother Ann Bailey has joined forces with Montana Highway Patrol officer Bryce McCabe. An expert in untangling the motives of depraved minds, Ann is tasked to help solve the mystery of two murdered women doused with gasoline and set aflame. It’s not hard for Ann to be reminded of the charismatic Elijah Weston, who served a decade in prison for arson - a crime that nearly cost Ann her life. Elijah may have been exonerated, but the connection to these rage killings is impossible for Ann to ignore.

Forced to choose between abortion or adoption, Olivia Carson’s younger sister, Lily, runs away from home. Sixteen and pregnant, she never returns. But she writes. Once a year, Lily mails a picture of her son, Josh, to Olivia until his thirteenth year. Then it’s Josh himself who arrives at Olivia’s house, alone, terrified, and in possession of a notarized declaration from Lily. It begins, “In the event I go missing...”

Former CIA operative turned mercenary for hire Ryan Decker’s specialty is rescuing kidnap victims. Hired by an influential US senator to liberate her daughter from a human-trafficking ring, Decker never anticipated sabotage or that the assault could go so disastrously wrong. The hostage is dead. His team is wiped out, and so are their families, including Decker’s own wife and son - eliminated one by one by the Russian mafia. And he’s survived to take the fall.

Haunted by his inability to track down and save his missing wife, DCI Robert Kett leaves the Metropolitan Police behind and moves to Norwich with his three young children, hoping to heal their broken family. But his newfound peace doesn’t last. Two newspaper delivery girls have gone missing in the city, and the clues point to a serial kidnapper. Kett is dragged into the centre of one of the darkest cases of his career - a case that pits him head-to-head against a horrifying evil.

When a man’s body is discovered in a Swiss glacier thirty years after he went missing, his son, Foster Treherne, hopes he’ll finally have closure on what happened to the father he never met. But then the autopsy reveals signs of a struggle, and what was assumed to be a tragic accident suddenly looks more sinister. Foster tracks down his father’s old friends, but when he starts to ask questions it becomes clear that there’s something they don’t want to tell him.

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.