Young curator Nora Kelly is approached by historian Clive Benton with a once-in-a-lifetime proposal: to lead a team in search of the so-called "Lost Camp" of the tragic Donner Party. This was a group of pioneers who became snow-bound in the California mountains in 1847, their fate unknown until the first skeletonized survivors stumbled out of the wilderness, raving about starvation, murder --- and cannibalism. Benton tells Kelly he has come across an amazing find: the long-sought diary of one of the victims, which has an enigmatic description of the Lost Camp. Nora agrees to lead an expedition to locate and excavate it. But as they uncover old bones, they expose the real truth of what happened, one that is far more shocking and bizarre than mere cannibalism.

Libby and her son, Ethan, are on a much-needed vacation. But in a moment of inattention, Ethan wanders into an elevator before Libby can reach him. When the elevator stops and the doors open, Ethan is gone. Hotel security scours the building and finds no trace of him, but when CCTV footage is found of an adult finding the child wandering alone and leading him away by the hand, the police are called in. The search intensifies, a lost child case turning into a possible abduction. Hours later, a child is seen with a woman stepping through an emergency exit. Libby and the police track the woman down and corner her, but she refuses to release Ethan. Asked who she is, the woman replies: "I'm his mother."

Abbie awakens in a daze with no memory of who she is or how she landed in this unsettling condition. The man by her side claims to be her husband. He’s a titan of the tech world, the founder of one of Silicon Valley’s most innovative start-ups. He tells Abbie that she is a gifted artist, an avid surfer, a loving mother to their young son, and the perfect wife. He says she had a terrible accident five years ago and that, through a huge technological breakthrough, she has been brought back from the abyss. But as Abbie pieces together memories of her marriage, she begins questioning her husband’s motives --- and his version of events. Can she trust him when he says he wants them to be together forever? And what really happened to Abbie half a decade ago?

For 13 days in 1976, teenage murderers April Cooper and Gabriel LeRoy terrorized Southern California's Inland Empire, killing a dozen victims before perishing themselves in a fire. Or did they? More than 40 years later, twentysomething podcast producer Quentin Garrison blames his troubled upbringing on the murders. And after a shocking message from a source, he has reason to believe April Cooper may still be alive. Meanwhile, New York City film columnist Robin Diamond is coping with rising doubts about her husband and terrifying threats from internet trolls. But that's nothing compared to the outrageous phone call she gets from Quentin...and a brutal home invasion that makes her question everything she ever believed in.

When World War II veteran Aloysius Archer is released from Carderock Prison, he is sent to Poca City on parole. The small town quickly proves more complicated and dangerous than Archer's years serving in the war or his time in jail. Within a single night, his search for gainful employment --- and a stiff drink --- leads him to a local bar, where he is hired for what seems like a simple job: to collect a debt owed to a powerful local businessman, Hank Pittleman. Soon Archer discovers that recovering the debt won't be so easy. When a murder takes place right under Archer's nose, police suspicions rise against the ex-convict, and Archer realizes that the crime could send him right back to prison...if he doesn't use every skill in his arsenal to track down the real killer.

Drawing on her own secrets, Madeline “Maddie” Schwartz helps Baltimore police find a murdered girl --- assistance that leads to a job at the city’s afternoon newspaper, the Star. Working at the newspaper offers Maddie the opportunity to make her name, and she has found just the story to do it: a missing woman whose body was discovered in the fountain of a city park lake. Cleo Sherwood was a young African-American woman who liked to have a good time. No one seems to know or care why she was killed except Maddie --- and the dead woman herself. Maddie is going to find the truth about Cleo’s life and death. Cleo’s ghost, privy to Maddie’s poking and prying, wants to be left alone.

In the winter of 1839, a sensational disappearance rocks Springfield, Illinois, as headlines announce a local man has accused his two brothers of murder. Not one to pass up an opportunity, Abraham Lincoln takes up the case of the accused with the assistance of his best friend, Joshua Speed, to search for evidence of innocence. But just as soon as they begin, Lincoln and Speed find their friendship at grave risk of rupture as they vie for the hand of a beautiful new arrival in town: an ambitious, outspoken young woman named Mary Todd. As the trial arrives, can Lincoln and Speed put aside their differences to work together for justice once more? An innocent man’s life may be in the balance --- and nothing is as it seems.

A young Australian woman turns up dead after a party thrown by her new boss. The initial investigation of Naomi Lockhart's murder points to Joseph Madden, the owner of a coffee shop. Madden insists he’s innocent, that he was home with his wife Rachel at the time of the murder. When police question her, Rachel contradicts his alibi, swearing that she was home alone. Detective Constable Cat Kinsella knows that one of them is lying --- but the question of which one, and why, is far more complicated than she could have expected. As she tries to balance the demands of the investigation with a budding romance and unresolved family drama, Cat has to decide how far she’ll go to keep her own past mistakes buried.

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 is torn between family and duty.

Jules Larsen is an apartment sitter at the Bartholomew, one of Manhattan's most high-profile and mysterious buildings. As she gets to know the residents and staff, Jules finds herself drawn to fellow apartment sitter Ingrid, who comfortingly reminds her of the sister she lost eight years ago. When Ingrid confides that the Bartholomew is not what it seems and the dark history hidden beneath its gleaming facade is starting to frighten her, Jules brushes it off as a harmless ghost story. Until the next day, when Ingrid disappears. What Jules discovers pits her against the clock as she races to unmask a killer, expose the building’s hidden past and escape the Bartholomew before her temporary status becomes permanent.