The estate agent handling the sale said: 'It's quite a niche market, most buyers don't need that many dungeons. It would certainly work as an evil lair, as you could easily convert the 'pleasure pit' into a shark tank.
'We did have some interest from a Royal buyer, but he was £12m short. Bill Clinton and Bill Gates both made inquiries, but that was to make sure they had left no fingerprints.
'It's got fascinating history and an even more interesting FBI file. But we do advise the new owner not to use uv lighting in 90% of the rooms'.