A date with Will leaves Elliot floating; when Jess receives a shocking DNA match and a ghost from Elliot's past returns, it's clear that the horrors of five years ago are back.

In hopes of finding out more about her DNA match, Jess visits the app HQ and befriends someone helpful; Elliot continues searching for Will and discovers how it all links back to Peter.

Elliot reels after revelations that Will isn't who he claims to be. So he and Jess confront the past by taking their investigation back to uni days.

Elliot has found Will, but is left with more questions than answers; after Jess seemingly abandons Elliot for Tina, tension and suspicion flare between the besties.

After a shocking murder, Elliot finds himself locked up in jail with Danny; since Jess is on the run with Tina, Elliot must call upon other friends to help find the true murderer.

Several mysterious circumstances involving the people around Elliot and Jess are unravelled.