I like Good Girl Bad Blood style mysteries (cozy but dark, school/university vibe, secrets, investigations). Any recommendations?

Hi im new to book reading and reddit as well.

So I am a person who likes mystery, horror, thriller and basically things that will keep u hooked up.

I want to immerse in some good reading.

Please suggest me some good readings, also do tell me something about the book u are suggesting and no spoilers plz.