Overview: Tonight the team head to the English/Scottish border and Carlisle Castle.Most famous for having Mary Queen of Scots imprisoned within it's walls in 1568, the castle switched hands between the English and Scottish many times over it's long history.Once used as a prison and barracks for the military, it still houses, to this day, the headquarters of a Royal Regiment. One of the many ghosts said to haunt the building is that of a woman found bricked up in a wall.Her skeleton was discovered on the second floor of the keep in the 1830's, and her presence is said to have caused one soldier to die of fright. What will the Most Haunted team uncover?