Bodelwyddan Castle was established in the 1830s, although the original building dates back to 1460. The Humphreys were the first family at Bodelwyddan in 1461. In 1690 the estate was sold to the Williams family moved in. Sir William was a Speaker in the House of Commons, being known for a bitter rivalry with the notorious Judge Jeffreys. In 1788 lead mines on the site were coaxed into production. During alterations to the building in 1829 they found human bones, which are apparently still there today. During World War I the castle was used as an officers mess and recuperation centre while in 1920 it was used as a girls school. The castle is now a museum and it also displays paintings from the National Portrait Gallery. Paranormal activity has included a shadowy figure in the Watts Hall, a Victorian lady in the Sculpture Gallery, the ghostly figure of a soldier in the Ante Room, and a female ghost wearing a mop hat has been seen walking through the tea room. In the trenches area outside, a lady in black has allegedly been seen by a number of children playing in the children’s play-area near by.

The investigation begins at the ground floor staircase where Derek picks up on a man named John who he felt had a close association to the castle, as well as knowing the truth about a body incarcerated behind a fireplace. Proceeding to the 1st floor he sense a girl who had died after a tragic accident, falling down stairs and breaking her neck. Meanwhile in the cellar David Wells connected with the energies of a murderer, a malevolent soul who he pictured dragging his victim behind which was a trail of blood. The vigils begin with Yvette, Ciarán and Tom in the cellar, where they experience strange dragging or scratching noises. The team then attempt a group séance, where the glass continuously moves, this time apparently passing personal messages to Karl and Yvette from loved ones. Of most interest however was the thermal imaging camera picking up a noticeable drop in Yvette's body temperature while she was supposedly in contact with her grandmother. The team then split into 3 groups, with Yvette and the girls investigating the ground floor, where both Yvette and Rachel suggest they hear a sudden deep sigh which sends them into a screaming panic. Meanwhile Richard, Karl and Stuart investigate the cellar, where upon entering they hear a loud scraping noise as if something is suddenly pushed across the floor. They then discover a heavy wooden table with a metal base, and decide to attempt table-tipping. The table rocks on a regular basis while the team experience strange sounds and see dark shadows from the back of the room. Then the table is seen suddenly lifting and jolting forward towards Richard, which leaves them perplexed and shocked. After reviewing the footage the team also captured a mysterious bright light anomaly moving across the room.