CARL Webster is going to launch a sick plot to BURN down the Chariot Square Hotel in Coronation Street.

The villain – who is played by actor Jonathan Howard in the ITV soap – is furious after discovering sister – and secret biological mother – Debbie left pal Ryan Connor in charge of her business empire instead of him.

Viewers know Debbie is taking the blame for Carl driving before the crash out of guilt for secretly being his birth mother.

Scenes will air later this week showing Debbie confessing the truth however owing to the schedule shake-up there are no episodes tonight or on Thursday so fans will have to wait until Friday.

And when she’s sent to prison, Carl stews with everything forming a twisted plan in his mind.

Ryan orders Carl to put up QR code stickers, but Carl refuses, which prompts Ronnie to back Ryan.

Discovering the stickers binned, Ryan sacks Carl, who, in a fit of rage, forms a sinister plan to set the hotel on fire.

But with guests in residence, not to mention all the staff – how deadly will Carl’s plan end up?

Meanwhile in prison, Debbie’s assigned an inmate to look after her, but she’s not best pleased to discover it’s Lou Michaelis.

The Sun exclusively revealed how actress Farrel Hegarty was making her return as the villain six months after exiting the show.

She was last seen in July but she made such an impression on bosses that they jumped at the chance to bring her back.

Viewers watched Lou get sent to prison for four years last year but actress Farrel has already filmed her return scenes which will air next month.

A source told The Sun: “Farrel is loved by bosses – she turned what could’ve been a one dimensional villain into a Corrie classic.

“Bringing her back was a no brainer. There’s potential for her to be back full-time down the line too.”