You there 🫵 GM who's down to run some short-form horror mystery stuff. Just trust me and pick yourself up a copy of Eureka Investigative Urban Fantasy and the Foriva: The Angel Game module and run it for your group. You can also get both of those items (and a bunch of other cool stuff) from the publisher's Patreon for not too much money.
I've been running a lot of different short modules for a lot of different systems lately, and FORIVA has had one of if not the best impacts on my group, and it took some of the least effort to prep for. I'm loathe to spoil the actual plot here, but you're basically looking at a module that does a great job of setting up characters with personal stakes in investigating a series of missing kids, then uses those personal stakes in some really clever ways. The module does bring in some themes of psychological horror that are worth making sure will work for your group, but those themes also do lead to some really evocative gameplay and writing.