A mist, resembling a man fighting, has been seen in the dungeon here. A claimed photograph shows the "mist" with its right arm raised, as if poised to strike another misty figure lying on the ground.
Update 14/1/22: Inquiring of the Castle's Facebook team as to whether anything had been experienced recently, Karen told me, "I’m sorry to give you a boring answer, but I’ve shared your message with my two colleagues who staff the castle and they were intrigued but honestly couldn’t think of any instances of odd happenings."
Link: Harrogate Advertiser
Click here to go to my Ghost Location page