Caught on camera: Is this a ghost floating across entrance to Dover Castle?

This is the extraordinary moment a 'GHOST' floats across the entrance to an historic castle.
In the incredible clip, a dark, wispy figure can be seen slowly walking across the entrance at Dover Castle in Kent before disappearing.
A bemused security guard can then be seen searching in vain for the mysterious spectre.
The one minute, 11 second clip was uploaded to YouTube by a user known only as spyder1spanner2.
A message accompanying the post read: “I promise you this is not a fake.
"It’s filmed on CCTV at Dover Castle on to a mobile.

“I wouldn't even know how to start making this a fake, to be honest.”
One viewer, Louise Hampton, was impressed with the footage.
She wrote: "This is great footage!!
"Looks like it tried to manifest.
"One can see how the legs were actually walking!!!!"
To date, the clip has been viewed more than 10,000 times.

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