Looking for podcasts similar to Cold

There was a time I listened to Podcasts and then suddenly I lost interest for about two years. I felt the need to catch up again and have just finished "Cold" which covers the disappearance of Susan Powell. I wanted to know if there was a similar podcast out there with a good amount of research done and with a host who is engaging.

Nothing on the level of "Up and Vanished" thou. I was a fan of them and then read on reddit how clumsy there production really is.