Seasons & Episode
Molly and J.D. discover another pregnant woman who is suffering from inexplicable and fatal symptoms. Meanwhile, Molly begins to question her own mental stability. Julie struggles with Ethan's rebellion.
Molly finally learns the frightening truth about what happened to her son. Also, Julie’s decision to erase Ethan’s memory has disturbing consequences.
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 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.
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 and JD try to convince Shepherd to broker a peace between humans and hybrids. Meanwhile, Lucy tries to manipulate Charlie’s feelings to put him in a compromising position.
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.
As Molly succumbs to the virus, long forgotten memories surface. Also, Julie is confronted with hard choices and the Hybrids seek revenge.
Following a near-death experience, Molly has a harrowing vision she can’t shake. Also, Shepherd's loyalty to the Global Space Commission is called into question.
Molly, JD and Ethan track down John’s mysterious former colleague who may hold the key to stopping the Humanich threat. Also, Julie enlists Charlie on a mission to find out where Lucy’s orders are coming.
An astronaut returns home from a year long solo mission in space. She tries to reconnect with her husband and son in their everyday life. Her experiences in space and home lead to events that ultimately will change the course of human history.