His name was Alfonse and he had been a scientist trying to disprove the phenomenon of "spontaneous combustion" of human bodies.
In the course of his experiments, he himself caught on fire and he was badly burned and later died.
We discovered that he had been working on a particular case. Edward Evans had died in his bed when he had caught on fire as he slept. Alfonse was convinced that someone had set him on fire.
Well, it turned out that they had but it wasn't anyone with a body.