Celebrity Big Brother 2017 launched on Tuesday 1 August and the star-studded line-up was finally revealed.
And one of the people who has entered the house is spirit medium and former Most Haunted star Derek Acorah.
Derek left the show, hosted by Yvette Fielding, after claims he had been exposed, with the star reportedly axed.
Here’s everything you need to know about Derek ahead of his stint in the Celebrity Big Brother house.
Celebrity Big Brother 2017: Derek Acorah entered the house but what does the future hold? [Karwai Tang/WireImage]
Derek Acorah is a spiritual medium, best known for working on Most Haunted alongside Yvette Fielding.
The medium was on the show from 2001 to 2005, and proved popular with fans as he appeared to make contact with those who had passed over.
Since leaving Most Haunted, Derek has had his own show which he hosted with Danniella Westbrook, called Ghost Towns with Derek Acorah.
Celebrity Big Brother: Derek Acorah is a spiritual medium [Channel 5]
Derek Acorah was reportedly axed from Most Haunted over claims he was faking scenes where he made contact with spirits.
The medium would often be possessed by spiritual beings on the show during ghost hunts, leaving fans stunned.
But Yvette Fielding later confirmed after his exit that he “had to go” after it was claimed he was pretending.
Most Haunted: Yvette Fielding used to work with Derek Acorah [UKTV / Most Haunted: Wentworth Woodhouse Stable Block]
It’s claimed a crew member made up the name of an apparent ghost in one venue, with Derek then claiming to make contact.
In one infamous clip, Derek was heard shouting that someone named Mary loved a man called Dick, declaring “Mary loves Dick.”
But Yvette and Derek had no idea they were still on air as they began laughing about it, with many believing this suggested the scene was staged.
For obvious reasons fans found it hilarious, with the comment being shouted out by a member of the Celebrity Big Brother crowd during Derek’s entrance.
Celebrity Big Brother 2017: Can Derek Acorah predict his fate in the house? [Channel 5]
Derek has already caused a reaction amongst his housemates, with them all fascinated by his gift.
Some viewers even noticed what they thought to be orbs, which are believed to be the manifestation of energy and linked to the supernatural.
As Derek walked around the house, after revealing he had brought his spirit guide Sam into the house too, viewers spotted mysterious white marks circulating him in the air.
Derek may finally open up about being dropped from Most Haunted, and reveal what really happened.
He’ll no doubt be questioned over his work as a medium, and here’s hoping he has a few stories to tell!