A mysterious new clone appears this season, linking the current season to the past. Felix is having feelings of separation and loss because of the big revelation that Sarah is actually related to S, while Felix isn't.

Sarah is in a desperate race to find her missing daughter, but her scorched earth tactics spark a war with Rachel, dividing and imperiling all the clones. As Sarah discovers more about her past, mysterious newcomers appear, but can they be trusted?

When five year-old Oliver Hughes disappears while on holiday in France, it sets off a nearly decade-long search for his whereabouts.

While tracking down a deranged, mech-enhanced villain, Lin discovers that a geneticist's lost biochemical invention has been surgically implanted into his missing daughter. With the help of a young hacker, Lin connects the dots between the device that haunts his daughter, his enemy's sinister army, and a strange cultural phenomenon.

1983, Indiana. A young boy vanishes into thin air. As friends, family, and local police search for answers, they are drawn into an extraordinary mystery involving top-secret government experiments, terrifying supernatural forces, and one very strange little girl.

A desperate American couple discovers all is not what it seems when they uncover a high-stakes underground scam while traveling abroad. To expose the truth and get back to the U.S., they must risk their lives to save their daughter.

Keller Dover is facing every parent's worst nightmare. His six-year-old daughter, Anna, is missing, together with her young friend, Joy. The only lead is a dilapidated RV that had been parked on their street. Heading the investigation, Detective Loki arrests its driver but a lack of evidence forces his release. As the police pursue multiple leads, Dover knows his child's life is at stake and decides he must take matters into his own hands. How far...

After suffering a family tragedy, Mack Phillips spirals into a deep depression causing him to question his innermost beliefs. Facing a crisis of faith, he receives a mysterious letter urging him to an abandoned shack deep in the Oregon wilderness.

Former cop Phil Lodge takes a job as a superintendent in a Manhattan apartment building. When a teen goes missing, along with several other tenants, Phil suspects a sadistic murderer may be roaming the eerie corridors and that his daughters' lives are in danger. But whom can he trust when everybody around him has something to hide?

An idyllic family vacation turns into a living nightmare for parents Paul and Wendy when their young daughter disappears without a trace. When the local sheriff fails to chase down any new leads, the frantic parents have no choice but to take matters into their own hands. As tensions mount and the list of suspects grows, the search for the truth leads to a shocking revelation where nothing is what it seems in this gripping psychological thriller.