Molly reveals disturbing new details about Shepherd’s death to the GSC, and Lucy makes a powerful move against the humans and hybrids that could have devastating global repercussions.
Molly, Ethan, and JD look for John's former colleague -- who may have information that could stop the Humanich threat; Julie asks Charlie to determine where Lucy's orders are coming from.
Molly has a vision she can't shake following a near-death experience. Also: Shepherd's loyalty to the Global Space Commission is questioned.
Memories resurface as Molly succumbs to the virus; Julie is confronted with hard choices; and the Hybrids seek revenge.
Molly tries to save her son following a raid on the hybrid compound and JD tries to rescue his daughter from Shepherd. Elsewhere, Lucy becomes a bigger threat to humans.
Molly panics when she discovers she is changing physically – the question is into what, and whether she can reverse what’s happening to her. Also, JD’s ex-wife, Dorothy, shows up suddenly on his doorstep to discuss their daughter.
Molly discovers Ethan is alive and sets out to get her son back. Also, suspicions about John’s death cause JD to investigate Julie’s potential involvement.
As Molly works to create a virus that will eradicate alien hybrids, she discovers that aliens are trying to communicate with humans through a hidden message in their DNA. Also, Lucy helps Ethan run away from Charlie in order to help him recover memories of his mother, Molly.
Molly finally learns the frightening truth about what happened to her son. Also, Julie’s decision to erase Ethan’s memory has disturbing consequences.
Molly and JD discover another pregnant woman suffering from inexplicable and fatal symptoms, while Molly begins to question her own mental stability. Meanwhile, Julie struggles with Ethan’s rebellion.
Six months after her life unraveled and dark secrets were revealed, Molly is confined to a psychiatric hospital when she learns of bizarre deaths that sound eerily similar to those she witnessed in space. When she escapes to investigate, she crosses paths with JD Richter, a determined cop who just signed on to the case.