Question: Why did Michael spare Annie?
ChristmasJonesfan
9th Jul 2021
Halloween (2007)
Answer: He knew she was Laurie's friend.
But he didn't spare Lynda, and she was also Laurie's friend.
Lynda was vulgar towards him in the beginning, and they also broke into what used to be his home to have sex. Honestly, not surprised he ended up killing her and her boyfriend (who are another representation of his sister and her boyfriend whom he killed).
Annie was either bait or he just had not finished yet.
Answer: He was out of time and thought that maybe he had killed her, and his attention was now elsewhere, i.e. Laurie.
ChristmasJonesfan