I always thought it was him. It just made sense. I had literally no reason to believe Alexis' friends were planting stories and seeking attention for themselves. <modsnip>
If I had a friend that told me about her husband choking her and she shows up dead, naked, on the side of the road... choked to death, I wouldn't shut up about it either. I would be on EVERY. SINGLE. social media platform, the media, etc.
Yeah, they probably didn't actually know she was strangled to death right away but knowing that her husband, who was a giant guy, was strangling her, I would make some noise about it too. For my friend, not because I wanted attention for myself.
Tom Sharkey is a piece of you know what, he murdered Alexis and victmized his own daughter buy killing himself in her home. Oh, and let's not forget how he didn't want to let Alexis' mother to see her body or take her to Pennsylvania. Disgusting, evil.