Limerick Corner: Hound of the Baskervilles

A two-part limerick from Sandy Kozinn (JHWS “Roxie”):

Someone’s killing at Baskerville, and fast.
Will the current heir end up the last?
His chances were poor:
The hound howled on the moor.
Then Holmes saw that picture from the past.

The experience wasn’t much fun,
And the end bad for ‘most everyone.
Moral: Don’t walk at night
When a dog might shine bright
Or the way through the swamps been undone.