VERY LATE EDIT: Sorry about thisbrandon237 said:The soul resides in the devourers body, slowly being tortured and forced to feel all that the devourers soul feels. when the devourer dies then the soul is released as a ghost that has been tortured and partly absorbed by the now dead devourer.
That is why all ghosts are unintelligent and can't think logically, they have been tortured in the deepest and most primal way. Poor souls.pun not intentional.
Sorry if that was morbid, I hope you all have happy dreams.