THE DEVIL’S FOOT – Page Three

In yet another horrific development, Mortimer Tregennis

has a fit and expires in front of a terrified Mrs Porter.

Mrs Porter describes the circumstances of Mortimer’s

death to Watson, Holmes and Rev. Roundhay.

Holmes describes to Watson his theory

of a poison that worked by combustion.

He sprinkles a small amount of the poison powder around the “lamp”,  

lights it with his invention and waits for something to happen.