Spontaneous Human Combustion

people have suddenly started burning up in great pain leaving only a foot or hand -- why?

In Unsolved by John Pinkney 2007 it was noted that one one single day in England three people combusted and died. The strange thing was their locations at death formed an equilateral triangle.

This signifies that their combustion was caused by extremely intense emotions, for the equilateral triangle exudes an ego-intense emotional feeling.

There were three other clues: Carpenter, Rose and 549, 'nearly 550'.