Castle Leslie is privately owned by descendants of the original Leslie clan. The castle was bought in 1655 by the Bishop of Clogher John Leslie but was added to and rebuilt in 1878. The Leslies can trace their ancestry back to Atilla The Hun. The first Leslie came from Scotland and was a Hungarian nobleman called Bartholomew Leslie who was the chamberlain and protector of Margaret Queen Of Scotland. The castle is now owned by Samantha Leslie, daughter of Desmond, one of the few surviving war-time Spitfire pilots. The Red Room is supposedly haunted by Norman Leslie who was killed in action in 1914 and whose mother, Lady Marjorie, awoke here one night to find his ghost standing by the chest of drawers, surrounded by a 'cloud of light'. The apparition of a noble named Lady Constance is supposed to haunt the Mauve Bedroom. A story exists of a lady of the castle named Leonie who, on her death bed, was visited by an elderly woman who spoke to her and then left. The sleepy nurse caring for her assumed it was one of the family members and said nothing. After the funeral, the family and the nurse were sitting in the Dining Room when nurse proclaimed that the elderly visitor looked exactly like the portrait on the wall - of Lady Constance, who had died in 1925.

The investigation began with Derek connecting with the residual energy of a spirit named Marjorie while at the top of the stairs, while proceeding to the Mauve Room he connected with the name of Leonie, a woman who he believed was a heavy smoker. Moving to the Red Room Derek felt a strange connection with the bed, suggesting that it did not belong here and that an angry presence was unhappy with it being moved. This however was incorrect as a bed had been moved to the Castle, however it is found in Norman's Room. Derek also connected with the spirit of Norman, suggesting that he was responsible for helping to block out this negative energy. The team then moved onto Norman's Room where Derek's link with the bed became more clear, understanding that this dark entity was responsible for its levitation. He also described how Norman was pleased that his sword had been returned to the castle (which was verified). The vigils began with Yvette, Cath and Ciaran in Norman's Room, where a number of strange bumps, tapping noises and orbs were picked up. Moving on to the Gallery further noises could be heard. The night concluded with a significant Table Tipping experiment in Norman's Room. As it progressed the response appeared to be more obvious, culminating with the table appering to lift entirely from the floor. Richard, who was asking the questions, seemed to identify that it was Lady Constance who was present in the room with them. The Extra footage also prooved to be of interest, as a locked off camera in Norman's room appeared to pick up a variety of activity. First what appeared to be ladies footsteps could be heard, followed by the bedside table visibly moving, after which the camera inexplicably blacked out for no reason.