Rachel Cooke case
Absolutely zero evidence (unless the police aren't speaking about anything they found) and obviously a case of foul play. The only thing the episode gives you is a confession from Michael Moore and who knows if it is true or not. It's hard to believe with some of these cases there is zippo to go on. This was definitely a case of being in the wrong place at the wrong time same as Britanee Drexel.
I also saw Rachel's father passed away in 2014 same as Steven Koecher's dad. So sad never knowing what happened before your own demise.