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something like A Good Girl's Guide To Murder series

I haven't read that, but I have a couple ya mystery/thrillers I can recommend.

The Rules by Nancy Holder, Debbie Viguie
Made for You by Melissa Marr

Sorry if they aren't what you're looking for.

Have you read The Madman's Tale or The Analyst by John Katzenbach? such mystery and suspense, you won't be able to sleep until you finish them.

I haven't read the series either, but for good mystery/suspense, maybe try the Janie Johnson series? (There may be some profanity, but it's been awhile since I read the first few, I haven't finished the series.)

The Mortal Instruments series by Cassandra Clare is a great series. In addition to the 6 book series, there are several spin-off stories to keep you interested.

I’ve also not read the example you gave, but Fade To Blue by Sean Beaudoin is a book that I first read in highschool or middle school. It’s definitely creepy and full of mystery. And now I’m gonna go find it to maybe start reading it again because I can never remember how it ends, but I always remember how intriguing it was.