I just listened to the unsolved mysteries podcast on this case. This is kind of local to me (I’m in PA, ~30 mins away) and have never heard of it before. I listened to another podcast from Crimepedia, which had a bit more details than the UM podcast. A couple questions I have after listening to the podcasts:
How heavily was Susan’s husband investigated after this incident? It’s suspicious to me that he wouldn’t have known she never came to bed that night when he woke up. Also that he said she took ambien and there was no ambien in her system, that he waited 1.5 hours upon receiving the call that her car was found abandoned to go get the car, and that, per the Crimepedia podcast, he went to a Rolling Stones concert the night she was found dead. A concert that his future wife who he married after Susan’s death, had also attended that same night, per the podcast. Police have said he cooperated, but family said he wasn’t very involved in trying to solve Susan’s murder. Interesting, you think you would want to see Justice in your wife’s murder. Just suspicious behavior IMO.
If she left the house and went to meet someone, I would think there would be some kind of digital evidence, text, emails, social media messages, between her and this individual, to show she was meeting up with someone. This leads me to believe she was not meeting someone. We do know she was using her phone that evening up until about 3 am, I believe the UM podcast states.