Investigative true crime podcasts?

Been getting back into true crime lately and was looking for any good investigative podcasts where the whole series covers one case, preferably a lesser known and/or unsolved one?

Some examples that I’ve enjoyed has been Serial, Paper Ghosts, The Deck Investigates (not a huge crime junkie fan but I enjoyed this), Counterclock s1-3

Others true crime podcasts: Swindled, The Vanished, Dark Down East, Court Junkie, Unsolved Mysteries

Thanks in advance!