Eight-year-old Brooklyn Mercer has gone missing. And as accustomed as FBI agents Eliza Sterling and Brandon Eddison are to such harrowing cases, this one has struck a nerve. It marks the anniversary of the disappearance of Eddison’s own little sister. Disturbing, too, is the girl’s resemblance to Eliza - so uncanny they could be mother and daughter. With Eddison’s unsettled past rising again with rage and pain, Eliza is determined to solve this case at any cost. But the closer she looks, the more reluctant she is to divulge to her increasingly shaken partner what she finds.

When the sound of sirens cuts through a cool fall night, the small town of Worthy, Georgia, hurtles from triumph to tragedy. Just hours before, they'd watched the Wildcats score a winning touchdown. Now, they're faced with the deaths of three cheerleaders - their promising lives cut short in a fatal crash. And the boy in the other car - the only one to survive - is believed to be at fault. As rumors begin to fly and accusations spin, allegiances form and long-kept secrets emerge.

When Agent Mercedes Ramirez finds an abused young boy on her porch, covered in blood and clutching a teddy bear, she has no idea that this is just the beginning. He tells her a chilling tale: an angel killed his parents and then brought him here so Mercedes could keep him safe. His parents weren’t just murdered. It was a slaughter - a rage kill like no one on the Crimes Against Children team had seen before. But they’re going to see it again. An avenging angel is meting out savage justice, and she’s far from through.

Four months after the explosion at the Garden, a place where young women known as the Butterflies were kept captive, FBI agents Brandon Eddison, Victor Hanoverian, and Mercedes Ramirez are still entrenched in the aftermath, helping survivors in the process of adjusting to life on the outside. With winter coming to an end, the Butterflies have longer, warmer days of healing ahead.

French Alps, 1998. Two young men ski into a blizzard...but only one returns. Twenty years later. Four people connected to the missing man find themselves in that same resort. Each has a secret. Two may have blood on their hands. One is a killer-in-waiting. Someone knows what really happened that day. And somebody will pay. 

Sloan McPherson and the Underwater Investigation Unit have discovered a van at the bottom of a murky Florida pond. Sealed inside the watery tomb are the bodies of four teenagers who disappeared thirty years ago after leaving a rock concert. To authorities, it looks like a tragic accident. To Sloan, it looks like murder. Every piece of evidence is starting to connect to a string of cold case vanishings throughout Florida. Clue by clue, Sloan navigates the warm, dark waters where natural predators feed.

In 1989, the Alphabet Killer, Professor Rodney Boone, murdered eight students. The victims, A to H, were each found with their surname initial carved into their neck. Victim nine narrowly escaped, and the murderer was left to burn to death. Eight years later, rookie Police Officer Rebecca Angell is thrown headlong into assisting a murder investigation. A body is found floating in the sewer, bearing the initial J. The investigators are convinced they are dealing with a copycat killer, but Boone's body was never recovered....

In the quiet coastal town of Weston-super-Mare, a body is discovered at the foot of a cliff just months after a near-identical tragedy - and Detective Inspector Louise Blackwell can't believe it could be a coincidence. Next to the body, she discovers a note that echoes one found beside the first: Death is not the end. Louise is certain that behind these desperate acts someone is pulling the strings, but how many more will plunge to their demise before she can find out who - and why?

Thirty-two-year-old Jessica is newly divorced and has returned home to live with her parents whilst she puts the pieces of her life back together. But Jessica isn't the only one with problems, as her mother, Jean, has recently been diagnosed with dementia. Shortly after Jessica's arrival, one of the neighbours falls to her death, in what appears to be a terrible accident. However, Jean claims that the woman was murdered by her husband and that she witnessed the whole thing.

It seems like an open-and-shut case for FBI special agent Lucy Thorne when Eliza Cook walks into the field office. The teenage girl confesses to murdering a young boy. Disturbingly composed, she reveals chilling details only the killer could know. Beyond that Eliza doesn't say another word, leaving a vital question met with dead silence: Why did she do it?

Convicted serial killer Benjamin Fisher has finally offered to lead San Bernardino detective Daniel Ellis to the isolated graves of his victims. One catch: he'll only do it if FBI profiler Reni Fisher, his estranged daughter, accompanies them. As hard as it is to exhume her traumatic childhood, Reni can’t say no. She still feels complicit in her father’s crimes.

When a body of a woman is discovered at a lighthouse in the Icelandic town of Akranes, it soon becomes clear that she’s no stranger to the area. Chief Investigating Officer Elma, who has returned to Akranes following a failed relationship, and her collegues Sævar and Hörður commence an uneasy investigation which uncovers a shocking secret in the dead woman’s past that continues to reverberate in the present day.

From home invasions to cheating spouses, Rest Easy Property Management owner Leticia Tish Ballard thought she'd seen it all. Almost four years sober after flambéing her real estate career in an alcohol-fueled blowout, she's finally in a good place in her life when the discovery of skeletal human remains rocks her world and plunges her headlong into solving a decades-old crime. Now she must delve into the darkness of her own past, including the one-night stand gone horribly wrong with Spence Breedlove, who happens to be the lead detective on the case.

From the locked archives of the Vatican to the overgrown jungles of Ethiopia, an unlikely trio begins a deadly search for the Holy Grail. Two journalists and a beautiful photographer are traveling together in a broken down Jeep while covering the 1975 Ethiopian civil war. Both men fall in love with the woman and that complicates things. When the trio winds up lost in the jungle, in the no man's land between the fighting factions, they take cover and dig in for the night. In their hiding place, they encounter a dying man who tells them an amazing and quite unbelievable story. But for some reason - one that they grapple with for the rest of their journey - that night they believe.

At the intimate house-warming party for her glorious ‘grand design’, Kathleen confides in her best friend, Beth, that she is terrified of one of their close friends but daren’t reveal which one. The guests are a tight-knit group, but Kathleen is convinced one of them is dangerous. The next day Kathleen’s body is found at the foot of a cliff, and Beth must face the sickening truth that she may have been killed by one of their trusted friends. With little help from the police, Beth’s decides to seek answers.