revealed to be working with his grandfather Silas Blissett (Jeff Rawle) and girlfriend Theresa McQueen (Jorgie Porter) to blackmail her family into giving them money. After the conclusion of the storyline which saw Theresa working with her family to get the money back, Seth left in scenes aired in February 2021. Storylines Seth, mother Heidi, father Carl, brother Riley and twin sister Jasmine move to Chester after Carl purchases The Dog in the Pond public house. Seth becomes attracted to Sasha Valentine (Nathalie Emmanuel) and Jasmine takes a photo of her on Seth's mobile phone. Sasha tells Heidi and as punishment Seth cleans The Loft nightclub. Seth and Riley go to a cage fighting event after being invited by their half-sister Jem's (Helen Russell-Clark) ex-boyfriend Liam McAllister (Chris Overton) who plans to exact revenge on Carl for ending his football career. At the afterparty, Liam gets Seth drunk and attempts to drown him in the jacuzzi. Mitzeee (Rachel Shenton) discovers Seth and resuscitates him. Seth and Riley are kidnapped by Liam and his brother Nathan (Michael Bisping) and Carl arrives to free them. Carl is then tied up and Seth and Riley fight in order to save him. Seth, Riley and Carl escape and are chased by Liam and Nathan. Nathan follows Riley and Carl onto a rooftop, where he prepares to break Riley's leg. Seth pushes Nathan, who falls to his death. Seth begins dating Fern (Amy Gavin) who tells him that Jasmine has gender identity disorder. He is unsupportive towards Jasmine and is bullied at school because of her decision to take the persona of Jason. Seth joins Lee Hunter's (Alex Carter) boy band Guy Candy. At Seth and Jason's joint birthday party, Seth gets kissed by Esther Bloom (Jazmine Franks). Later that night, Gaz Bennett (Joel Goonan) offers Seth dodgy steroids. Seth seems to be getting led down a dodgy path, as he buys more pills from Gaz. Jason overhears Seth buying dodgy pills from Gaz, but Seth seethes at his brother for trying to get involved. Later, Seth is working out when the strain becomes too much and he collapses. Seth is rushed to the hospital, while Jason tells Gaz to come clean about the steroids, but he warns he’ll be straight back in prison for dealing if he tells the truth. Seth finds out that Carl is having an affair with Riley's fiancée, Mercedes McQueen