When a police investigation begins into Connor’s disappearance, Christine must pull off her most masterful show of lies yet. The pressure is on. Worried that Kate could become a liability, Christine pays her a visit, and the Rees siblings come to blows when Jamie makes a rash decision. Meanwhile, Megan’s new husband Gethin and Will’s wife Samantha grow tired of their partners’ lies. A damning discovery in the police investigation threatens to expose everything.