YA Thriller recs?

Any good Young Adult mystery/thriller/suspense/horror?

Loved What we did to Survive by Megan Lally and I like The cheerleaders by Kara Thomas. The Naturals- Jennifer Lynn Barnes was good too. I didn't like The Inheritance Games – too riddly. I only liked the first book of one of us is lying. I hated this lie will kill you and AGGGTM as they didn't suck me in but Holly Jackson overall is a good writer. Looking to get Sadie even though it's much different to what I usually read. I think Ravena Guron and Natasha Preston might be good. And I'm reading a Cynthia Murphy book and loving it but it is quite supernatural for my liking. It's The Midnight Game. I want page turner books with twists that'll have my jaw dropped on the floor. I like a subplot of romance but only if it's done right. Like how it was done in Megan Lallys book that I recommended at the beginning but I don't need a subplot of romance and it shouldn't be taking away from the thriller feel. Any suggestions?