Teen mystery in which 2 best friends start a podcast to investigate the disappearance of a teenage girl 20 years ago.
I really liked this, but it's definitely a teen book with characters making impulsive, bad decisions like teenagers do so you have to be able to tolerate that if you read it.
The small town this is set in has the same name (spelled differently but sounds the same) as the town I grew up near so that was jarring to keep hearing.