Cracking the Code
S02E04 - Airdate: 2015-07-22
Runtime: 60 min
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.
Episode details and rating from TVmaze.