Extant Season 2 Episode 4

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.

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Serie: Extant

Episode Title: Cracking the Code

Air Date: 2015-07-22