Extant - Cracking the Code

Seizoen: 2 - Aflevering: 4 / 17 - Eerst uitgezonden: 22 juli 2015 - Episode ID: 1161039

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.