Picking between genres was tricky. I kept leaning back and forth between mysteries/thrillers and fantasy. Because I talk so frequently about fantasy, I decided to dive into thrillers because ah, there are so many good ones.

What makes a good thriller? 

I'd say what makes it good is in the word thriller itself.

If it gets my heart racing and my mind whirling, if it makes me pause, if it stays at the back of my mind even after finishing, that's what makes it a good thriller.

And what will make me reread it again in the future.

While some of these are different levels/sub-genres when it comes to thrillers, they really get the job done and messed with my head in the best way possible. Ultimately, I've never forgotten these books and I probably never will.