The exterior of Bristol's haunted Shepton Mallet Prison

It's officially October, and you know what that means — scaring the living daylight out of yourself for the next 31 days. And as much as we love a good horror movie or haunted house, a new opportunity has become available that completely overshadows the rest. We're talking spending the night in an actual haunted prison.

Not just intended to look scary for Halloween, Bristol's Shepton Mallet Prison is the real deal. Built in 1610 and steeped in spooky history (like horrific death sentences that occurred up until 1945), it's widely considered to be the most haunted in the United Kingdom. As for those souls haunting the halls, we're guessing the notorious Kray Twins and Charlie Richardson (who served sentences at the prison in the 1950's) are included.

Now you can add your own name to the prison's list of inmates, as for one night only on October 13, you can pay to spend the night locked inside. For £60 per person, guests will have the chance to wander the facility after dark, sleep in a cell, and have breakfast and dinner provided. That said, guests are asked to bring their own warm clothing, mats, sleeping bags, and pillows.

Tickets are available at the Immersive Events website, and while they're nearly sold out you needn't worry. Apparently the popularity of the event was unexpected, and more dates will be released in the future. Fingers crossed for an October 31st date — it seems only fitting.