What’s the best thriller you’ve ever read?

Nowadays I find myself only being able to finish reading thriller books that are intense, books that don't bore me, that have something that make me pick them up over and over again to continue reading. I'm looking for suggestions of thriller books you consider the best. A book you had no hesitation or just very little hesitation in rating a 5/5. So far such books for me have been Gillian Flynn's "Sharp Objects" and to name a classic, Agatha Christie's "And Then There Were None". However, I'm open to try reading whatever your suggestions are, not necessarily similar to the books I mentioned.