Northumbria Police's Pc Darren Lant, along with other officers from across the country, will spend the night of Saturday, February 9, in a cell to collect funds for the COPS charity.
Pc Lant said: “I’m nervous I’ll be honest but it’s all for an amazing cause.
"COPS is a fantastic charity who do inspiring work with families who have gone through horrific losses.
“I’m happy to show my support in whatever way I can – but I’ll have my fingers crossed that Casper doesn’t make an appearance on the night.”
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COPS is a UK registered charity dedicated to helping the families of police officers who have lost their lives on duty and help them rebuild their lives.
The creep-over will take place at Steelhouse Lane Lock-up in Birmingham.
Half of the money raised will also be going to the West Midlands Police Museum to help relocate the historic lock-up and deliver inputs on policing issues such as knife crime, drugs and online safety.
Many paranormal investigations have taken place at the Victorian mini-prison since the building closed, with significant activity and encounters being reported by many who visit.
Donations can be made via https://chuffed.org/fundraiser/lockup-lockin-7810 and people can keep up with the fundraiser on Twitter by searching #LockUpLockIn.