I had forgotten some of the details from the original set of episodes, but HBO started a follow up on their 2015 series "The Jinx." It profiled accused murderer Robert Durst who is part of a billionaire real estate family. In the early 80's his first wife went missing and was never found. In 2000 his friend was found murdered presumably because she had knowledge about the first case. Durst then went into hiding and then admitted to murdering/dismembering his neighbor. And then somehow (insert Texas joke here), they were able to successfully argue self-defense.
Durst seemed oddly willing to talk about all of it, although it seemed to be a case where he had rehearsed his story for so many years. In one of the early episodes, there was some foreshadowing as Durst asked to take a break but didn't realized he was still mic'd up. Whoever he was there with then pointed that out as Durst was practicing his next set of answers.
In the finale, the documentary crew uncovered new evidence that could implicate Durst in the 2000 murder. After seeing that evidence, Durst asked to be excused to use the restroom and once again forgot he was mic'd. He proceeded to seemingly confess to the murders while talking to himself.
He went on the run again after that and was arrested a day before the finale aired on HBO. The first new episode picks up from there. If you're a true crime fan, it's probably worth a watch although it is creepy as the likely murderer all but happily is speaking to the camera professing his innocence.
Watched episode 2 yesterday and they keep finding more oddball associates of Durst. I suppose weirdos attract other weirdos. Not sure I'd recommend the series, definitely seems like they're milking things to get to a 45 minute run time for each episode.