History
Culzean Castle was the former home of the Marquis of Ailsa but is now owned by the National Trust for Scotland. The castle lies with the Culzean Castle Country Park and is opened to the public. The castle is also famous for appearing on the back of five pound notes issued by the Royal Bank of Scotland. It was constructed on the orders of David Kennedy, 10th Earl of Cassilis. He instructed the architect Robert Adam to rebuild a previous, but more basic, stately house into a fine castle to be the seat of his earldom.

The castle was built in stages between 1777 and 1792. It incorporated a large drum tower with a circular saloon inside (which overlooks the sea), a grand oval staircase and a suite of well-appointed apartments. Dwight Eisenhower stayed briefly at the castle during World War II. After the war ended, the Kennedy family gave the castle and its grounds to the nation. In doing so, they stipulated that the apartment at the top of the castle be given to General Eisenhower as a thank-you for his part in winning the war. The General stayed at Culzean Castle several times including once while President of the United States.

An Eisenhower exhibition takes up one of the rooms of the castle, with mementos of his lifetime. The castle was used as the ancestral home of Lord Summerisle (played by Christopher Lee) in the 1973 film The Wicker Man.

Phenomena
Legend has it the castle is haunted by a knight, said to be the spirit of Sir John Cathcart who abducted May Kennedy and planned to kill her but luckily for May, she managed to push him off the cliff tops near Carelton Castle. Another ghostly visitor is the piper who used to play in celebration of clan weddings. He can be heard playing on stormy nights. A mystery woman dressed in a ball gown has also been spotted in the castle grounds.

Several sightings have been reported of a 'peculiar misty shape' moving up the famous oval staircase. Apparently the staff at the castle are briefed about 'a wee ghost near the dungeon'.

Investigation
On his initial inspection of the site, Derek hears minstrel music and also the sound of bagpipes, which he accredits to a piper called Donald McGregor. He also senses the presence of a military man called Dwight, who could be former American President Dwight Eisenhower. During the night vigils, the most impressive part of the investigation is several light orbs, recorded in the Earl's Bedroom, appearing seemingly on request. They also pick up a larger anomaly, larger than an orb, which the team feels is the manifestation of a spirit.