Scooby Doo Hamlet

VELMA:
The first clue came from Elsinore's high walls,
Where, so said Hamlet, Hamlet's ghost did walk.
Yet though the elder Hamlet met his death,
And perforce hath been buried in the ground,
'Tis yet true one would not expect a ghost
To carry mud upon his spectral boots.
Yet mud didst Shaggy and his faithful hound
Espy, with footprints leading to a drop.
This might, at first, indeed bespeak a ghost...
Until, when I did seek for other answers,
I found a great, wide cloth of deepest black
Discarded in the moat of Elsinore.
'Tis clear, the "ghost" used this to slow his fall
While darkness rendered him invisible.