Ghost caught on camera at Warwick Castle

Ghost caught on camera at Warwick Castle is a commercial satirizing this parody of Ghost in the London Dungeon.

It starts off with a text reading: "This video is 100% real and was captured by security cameras at Warwick Castle. The ghost was caught on camera while builders were working on the new Dungeon attraction. Watch the bottom left quarter of the screen where the two builders are talking. If you put on your speakers and listen carefully you can hear strange, inexplicable background noise."

There are 4 security footage with time-stamp 01:20:00 being shown early on when happen, the picture goes blurry at a moment shifts, However, when the time-stamp progresses to 01:49:10, a ghostly figure moving slowly, and two guys walking down a hallway. After 53 seconds, however, a ghostly man appears, followed by a high-pitched scream.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=FGG0gKeFDNA