If I like stories like Room 20

[OneToThree]

And Bear Brook what else should I listen to?

tobee recommended Room 20 and put a list on another thread (now you've both made me subscribe to Bear Brook, so thank you!) of similar ones to those two - STown, The Shrink Next Door, Dear John, Dr Death, The thing about Pam. The Ronan Farrow investigation in to Weinstein The Catch and Kill Podcast is excellent.
Wondery and LA Times are good networks to check out for these types of podcast.To Live and Die in LA, Bad Batch and I've just finished Detective Trapp.
There are some good Australian ones, though they can be more long-winded: The Lighthouse, The Lady Vanishes, the Teacher's Pet, Nowhere Child, Pendulum.
Radio 4 is worth checking out for Death in Ice Valley, The Ratline, Crypto Queen was recommended on a thread here and was great. I have subscribed to Tunnel 29, but haven't even started it yet.

Wonderful thank you 😊