series of spin-off Hollyoaks Later. In December 2011, the serial's executive producer Emma Smithwick said that Riley would be the only member of the Costello family remaining in the serial. Smithwick told Inside Soap that Riley's storyline with Mercedes had not been concluded. She confirmed that the storyline would return to the "fore" of the serial in 2012. On 14 September, Daniel Kilkelly from Digital Spy confirmed Norbury had left Hollyoaks. Kilkelly stated that while the actor had filmed his final scenes as Riley, the exact details of his exit would be kept under wraps. The following month, Riley died on-screen. Norbury revealed that he had filmed his final scenes on 11 September. He explained "I knew I was leaving quite a while ago now, so then it was a case of waiting to see what my leaving story would be. We decided in early summer that I was going, and then we ended up having a chat in July or August time when they said they'd had an idea of Riley being killed." The actor thought killing his character off was "better than a lot of other exits that you can get" and he was pleased with how it played out. Storylines Riley first appears with his family when his father Carl (Paul Opacic) buys The Dog in the Pond. Riley attracts the attention of Michaela McQueen (Hollie-Jay Bowes). Zak Ramsey (Kent Riley) is jealous, so challenges Riley to penalty shootouts, unaware he is a footballer. During a fashion show for Heidi, Riley strips for the cat walk, where Theresa McQueen (Jorgie Porter) is attracted to him. Carl continues to push Riley into training for football. Riley and Seth Costello (Miles Higson) are invited to a cage fighting party by half-sister Jem's ex-boyfriend Liam McAllister (Chris Overton), who plans to get revenge on Carl for ruining his football career with older brother Nathan McAllister (Michael Bisping). Riley is seduced by Sami (Candy McCulloch), Nathan's girlfriend, and sleeps with her before being drugged. After Nathan and Liam lock Riley and Seth in a cage, they tie Carl up with a noose around his neck. Nathan and Liam make Riley and Seth cage fight each other, after convincing Seth that Carl is ashamed of him. The Costellos soon escape, with help from Sami, and are chased by Nathan and Liam, who have a gun. Carl manages to get the gun, and