Complete story — includes the ending
Molly testifies in a hearing that she's certain none of the alien spores made it back to Earth, after being coached to lie "for the good of the country". However Sean, her astronaut colleague, did not make it back alive. Surprised to find Ethan's programming still intact, John and Julie are able to re-activate him. Ethan is soon forcibly removed from the Woods home by Homeland Security, and it is revealed that Julie was complicit. John's self-drive car mysteriously stops on train tracks and he is killed by an oncoming train. Six months later, Molly has been committed for psychiatric treatment. One of the aides shows her a photograph of a murder, which is reminiscent of a cadaver murdered by the aliens. Molly escapes but is captured by JD Richter, a cop-for-hire working on the case, and is returned to the hospital. After Molly explains to Richter that the victim was pregnant and why, Richter pulls strings to get her released and use her to help on the case. Molly proposes to Richter that what they're investigating isn't a murder, it's an invasion. Elsewhere, a young adult male picks up a woman in a bar. As the two leave, the man's eyes glow like the Offspring's.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Extant (TV series). HTML formatting and reference markers removed. · Content license