Without telling Emily or her parents anything, Bill decides with Zoe to test on Emily the biological weapon he hopes to be able to use against the aliens. Catherine, for her part, has had difficulty managing her grief since Mokrani's death. She now has only one thing on her mind: to find out who Bill Ward is and find him. Sophia is ready to help him, but Nathan hesitates.
Elenco: Léa Drucker , Gabriel Byrne , Elizabeth McGovern , Bayo Gbadamosi , Natasha Little , Daisy Edgar-Jones , Ty Tennant , Stephen Campbell Moore , Stéphane Caillard , Guillaume Gouix , Paul Gorostidi , Emilie de Preissac , Adel Bencherif , Mathieu Torloting , Mathieu Torloting .