+1
But the mythos of that storyline is that Michael was originally cursed by his babysitter (Mrs Blankenship) who lived down the street. According to the novelization of the storyline, Mrs. Blankenship told Michael stories of her cult, their beliefs and eventually put the curse of thorn (which made him immortal) on him. This is what caused him to go home from her house and kill his sister in 1963.
That's the part of the story I was referring to.