Psychological Suspense/fiction

I need something gripping and unputdownable,lol. I love psychological fiction with depth and character development. Problem is, I am very picky and can't stand formulaic stories. I absolutely love Gillian Flynn, especially Sharp Objects. I loved, loved, loved, Crushing Little Things by Amy Meitz. I also enjoyed You by Caroline Kepnes. Please no Freida McFadden, a little too cliche for me, I've already read The Silent Patient. Thanks in advance!