That's a problem I have with this true crime stuff. They spend the first 80% of the show making everyone look like a suspect, even people that had no motive and an airtight alibi. Saw one once where the boyfriend was literally out of town, confirmed by multiple witnesses. But they spent 5 full minutes on him, implying a bad breakup and maybe history of stalking/violence. Then went to commercial break, and then came back and said "but he was literally 2 states away so nevermind".I worked with the fiance when that episode came out. She didn't want to do it but Dateline had said they were going forward with the story and if she didn't participate, they would most likely spend part of the episode making her look suspicious.
And then they can lean on you (extort?) to be involved - like the above, with the implication spoken or not, that they will make you look bad. All for their own benefit. Some of these folks are garbage people.