4x01 - Thomas
The award-winning drama returns for a fourth series. Cook (Jack O'Connell) is enjoying a summer of debauchery, while Freddie (Luke Pasqualino) is learning that love can take you to the edge of sanity. The gang are enjoying themselves at one of Thomas's (Mervielle Lukeba) club nights until an accident at the club leaves Thomas feeling responsible. He is shocked into questioning his role within society and feeling alienated from his peers, he turns closer to God and the African community - and in doing so, isolates everyone around him.
Writer: Jamie Brittain; Dir: Neil Biswas; Prod: John Griffin; Prod Co Company Pictures

4x02 - could be Emily's or Naomi's
Emily (Kathryn Prescott) and Naomi (Lily Loveless) are back at Roundview and seem as loved-up as ever. When the police turn up, they are both called in to be interviewed. Their names were listed by the family as close friends of Sophia's, even though Emily knows they'd never met her. Emily learns that Naomi was dealing pills with Cook (Jack O'Connell) in the club that night and sold one to Sophia. Behind Naomi's back, Emily visits Sophia's family - she needs to know why the family had their names. She discovers that the dead girl claimed to be best friends with Naomi and Emily. Whilst looking around Sophia's bedroom Emily secretly pockets a key. Effy's (Kaya Scodelario) return has drawn a line under Cook and Freddie's (Luke Pasqualino) joint denial-fest. Though they keep their distance from Effy at first, Cook later sees Effy and Freddie get together. In haste he lashes out - assaulting a random party-goer - and gets nicked. Emily realises that the key she found is for Sophia's locker and inside she finds a shrine to Naomi. Was Sophia some kind of Naomi stalker?
Writer: Ed Hime; Prod: John Griffin; Exec Prod: Bryan Elsley; Dir: Philippa Langdale; Prod Co Company Pictures