Dizi Adı: Extant
Bölüm Adı: Cracking the Code
Sezon/Bölüm: 2. Sezon 4. Bölüm
Yayın Tarihi: 22 Tem. 2015

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.