Thriller/Mystery (With a tad romance, but still so worth it): 
- The Red Game (Ongoing)
- Her Blue (Ongoing)           
             
Disclaimer: My books are mainly heavily crafted plots and world-building with slow burn, suspense sort-of romance and occasional spice and smut scenes, so if you're here for the spice, then you're sadly in the wrong place ;) 
I'm a girly who enjoys the tension more than the real thing, so I hope there are others out there like me.