I can picture it. He breaks down the door and she turns to run. He grabs her from behind and she struggles, scratching his arm. While struggling with her he is trying to get the tranq dart out of his pocket and while doing so drops the bullet that was also in his pocket. (I wonder if ever carried a bullet in his pocket like a worry stone? Being that he is such a big hunter and all.) He plunges the tranq into her, and she falls back onto the bed. He grabs the cord from the bedstand and strangles her with it. I believe this is all happening in a blind rage that was building since Wednesday when she told him she was done.
He spends the rest of the day and evening cleaning up and disposing of SM’s body. In the wee hours of the morning he plants the bike. He leave for Broomfield, but first turns west on Hwy 50, so he can plant the helmet. I think he over thought this part. I doesn’t make sense that the helmet was a quarter of a mile away from the bike.
Anyway, after planting the helmet he heads east on Hwy 50 to start his journey to Broomfield to nail his false alibi. Once there, he starts his systematic disposal of evidence. Another stupid move on his part.
I’m glad he thought he was so smart and so clever. This assumption caused him to do all these dumb things that will lead to his downfall. He thought he learned everything he needed to do because he listens to all these true crime shows. What he didn’t think of is the fact that in those shows, in the majority of cases, the bad guy is caught in the end.