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Coronation Street flashbacks finally reveals who killed Theo Silverton following dramatic dinner party in early ITVX release

Warning: Contains major spoilers for Monday's episode of Coronation Street, which airs at 9pm or can be streamed now on ITVX.

Theo stood in the precinct in a scene from Coronation Street

ITV

Published: Monday, 22 June 2026 at 8:00 am

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We finally know who killed Theo Silverton (James Cartwright) in Coronation Street.

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The murder mystery has been ongoing since a flash-forward episode in February.

At first, viewers weren't privy to who the victim was, though following Carla and Lisa Connor-Swain's (Alison King and Vicky Myers) wedding in April, their daughter Betsy (Sydney Martin) found Theo's dead body in the backyard of the corner shop.

Since then we've seen a number of Weatherfield residents questioned. As it stands, Gary Windass (Mikey North) is DC Kit Green's (Jacob Roberts) prime suspect.

In tonight's episode, he eyed Gary looking shifty during an after work drink with wife Maria Connor (Samia Longchambon). She has her own suspicions about her husband's behaviour, but rather than having blood on his hands, she wondered whether he was sleeping with ex-girlfriend Sarah Platt (Tina O'Brien).

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The two have been acting strangely for weeks, and she'd now come to the conclusion that this was because of an affair.

Before leaving the Rovers, Kit invited Gary and Maria to join him, Sarah, Todd Grimshaw (Gareth Pierce) and Summer Spellman (Harriet Bibby) for dinner. Both Gary and Sarah were against the idea, knowing how uncomfortable the meal would be, though Maria decided to use it as a platform to address her concerns.

At the Redbank Apartments, she began making barbed comments towards Sarah, while an oblivious Summer knocked back the wine.

Maria, Kit, Gary, Todd, Summer and Sarah all sit around a dining table glaring at one another in key art for Coronation Street

A dinner party revealed all. ITV

Kit wanted some alone time with Gary, using it as an opportunity to make it clear that he wasn't off the hook and that he didn't believe his alibi.

Dinner was then served. Before everyone could start tucking into their starters, Summer smashed a glass on the floor and Sarah began to pick up the glass, accidentally cutting herself. Maria stood up, announcing that she was sick of the games and wanted to know about Gary's infidelity.

He and Sarah denied everything, though when Maria stormed out, it became clear that they were hiding something. The blood pouring down Sarah's hand reminded her of the moment that she killed Theo.

Maria and Sarah stand over a dining table, with Summer, Gary, Kit and Todd sat around it in a scene from Coronation Street

Sarah Platt (Tina O'Brien) was revealed to be the killer. ITV

A flashback took us back to April, with Sarah becoming concerned that Todd hadn't returned her calls. She arrived at the shop flat, began calling his phone, and wondered why it was ringing from outside.

She climbed out onto the scaffolding, and was spooked to find Theo. He implied that he'd done something to Todd, and branded her a "whore" for having two children by two different fathers.

He then remembered that she'd once had a child with Todd, who was born prematurely and died in 2004. Theo outright claimed that Sarah was still hoping to reconnect with his husband, and that her behaviour was pathetic.

Gary places his hands on Sarah's shoulders in Coronation Street

Gary Windass (Mikey North) has been protecting Sarah. ITV

Theo lunged towards Sarah, and fearing for her life, she grabbed a piece of scaffolding in self-defence. She then whacked him across the head, which sent him flying down to the pavement below.

Gary was summoned, and in a bid to protect her, he ordered her off to the Platt residence to get an alibi while he used Theo's phone to text his ex-wife Danielle (Natalie Anderson). That way, it would seem like Theo was still alive after Sarah's involvement.

Of course, when she got to No. 8, Jodie Ramsey (Olivia Frances Brown) whacked her around the head with an ornament.

Now fearing that he's about to be sent down, Gary told Sarah that he was going to tell Maria everything.

Could Sarah be sent down?

Read more:

Coronation Street airs weeknights at 8:30pm on ITV1 or can be streamed from 7am on ITVX.

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Authors

Michael Adams wearing a white t-shirt and beige gilet against a white background

Michael AdamsSoaps Editor

Michael Adams is the Soaps Editor at Radio Times, covering all of the hot gossip and spoilers from Weatherfield to Walford, Emmerdale to Hollyoaks and everywhere in-between. He joined the team from Metro, where he spent two years as a Soaps Reporter and previously worked on the sets of both Coronation Street and Emmerdale.

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