Coronation Street fans think Christina Boyd is hiding a dark secret on the ITV soap that could spark an exit for the character amid speculation over Theo's killer16:36, 20 May 2026Updated 16:36, 20 May 2026Christina Boyd in Coronation Street has left fans wondering if she could be Theo Silverton's real killer.‌The character is clearly hiding something, and she was caught out this week for lying to the police. She'd given a statement regarding her whereabouts on the night Theo was murdered‌But something in her albi did not add up, while Christina was quick to play this down. Her shifty behaviour though has sparked confusion and suspicions with viewers.‌With her so desperate to cover her tracks that she allowed Summer Spellman to be thrown under the bus with Theo's demise, fans think she is hiding a dark secret. if this is true, it could lead to an exit for the character.READ MORE: Coronation Street fans 'figure out' what's wrong with Sarah after concerning behaviourREAD MORE: Emmerdale farm arsonist 'rumbled' by fans as Kammy 'ruled out'Viewers are speculating whether Christina could be the real killer of Theo. Some wondered if she was the only one to blame, or if she and someone else were there for his final moments.‌Taking to social media, one fan said: "Maybe Christina dealt the final blow as she's been sounding very shifty. Summer feels too obvious for me."Another fan agreed: "Christina killed Theo," as a third said: "Hmm maybe Christina is deflecting a little too much." A further theory read: "The Christina thing is really confusing me as I don't think she killed Theo but then why is she lying about where she was when she went to help Todd?"Maybe she did kill Theo on route or saw who did?" It comes as someone else faces accusations in new spoilers for next week's episodes.‌Named suspect and Theo's ex-wife Danielle Silverton faces accusations next week and soon there's a bombshell. As George Shuttleworth and partner Christina attempt to bury the hatchet with Todd Grimshaw, Tracy Barlow speculates Danielle is guilty of Theo’s murder.When Todd refuses to attend Theo’s funeral, Danielle accuses him of being the killer, only for Ryan Connor to drop an admission about Danielle. Ryan tells detective Lisa Swain what he knows, and Danielle is taken in for questioning.‌But what is it that she is hiding, and how does Ryan know? Meanwhile, some fans think teenager Sam Blakeman could have accidentally killed Theo, after he was revealed to be experiencing haullcinations.A fan posted online: "I'm saying Sam." Another viewer posted: "I think Sam killed Theo during one of his mental health breakdowns." A third fan added: "I think Sam pushes Theo (thinking he was Will), and Summer is covering for him."Sharing a similar theory, another fan posted: "Was that scene of Sam hallucinating with the view of the scaffolding an hint to him being the killer of Theo thinking he was Will?" A fan then wrote: "I really think Sam killed Theo." The suggestion kept on being shared online, as one said: "I think Sam pushed Theo off the scaffolding while he was in a deluded state of mind maybe thinking it was Will."Article continues belowCoronation Street airs weeknights at 8:30pm on ITV1 and ITV X. * Follow Mirror Celebs and TV on TikTok , Snapchat , Instagram , Twitter , Facebook , YouTube and Threads .