SHAKEN Arlene Phillips says she has heard soldiers talking and children running through corridors.
Her claims have shocked crew given that the castle was used as a home to Jewish refugee children fleeing the Nazis in World War Two, insiders say.
A source said: “All the campmates have found the castle to be creepy at times.
“But Arlene seems to have been much more unnerved by unusual happenings, especially at night.
“She has told the other celebrities about the soldiers and children.
“This was part of the reason she was considering leaving during the first week when she was staying in The Clink.
“The details may not have meant much for the campmates but many of the crew know the castle’s history — and as a result have been quite freaked out by what she believes she heard.”
Former Strictly judge Arlene, 78, has previously said she is not spiritual.
But Gwyrch Castle is said to be haunted by a lady in white, thought to be the Countess of Dundonald, and her vengeful husband who rages that he failed to inherit the castle on her death in 1924.
Up to 300 Jewish children sent there in 1939 later found out their parents had been killed in Nazi concentration camps.
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The source added: “Much of the castle’s dark history still feels very present to those who’ve been inside.
“Even sceptics might find it odd that Arlene’s claims chime with events here decades ago.”