Flashbacks reveal a haunting connection between Marshall and the early migration. Meanwhile, Jude investigates a mysterious disappearance, and Sophie risks her life and career to help Reece save her daughter.

A grisly discovery in camp leads to the arrest of an unlikely suspect, and a risky move by Jude may be the only way to expose the truth. Meanwhile, Reece finds herself captive, and Rebecca falls under the sway of Naomi in a way that could change everything.

A local homeless woman’s surprising connection to the crossing provides Jude and Nestor with crucial answers about what really happened at the threshold. Meanwhile, Naomi’s growing influence at the camp leads to a shocking confrontation.