Recommendations Detective

A good bl (but not necessary) detective story, with serial killer or psychologist like sha qing, the way of evil, psychological control, etc.

 

Black Butterfly, Where Does the Black Butterfly Go Drink Water
Have not read it, but it looked good.

 

How about Mo Du?

 

https://www.novelupdates.com/series/s-c-i-mystery-series/
https://www.novelupdates.com/series/escape-the-infinite-chamber/
https://www.novelupdates.com/series/breaking-through-the-clouds/
They might fit what you are looking for?

 

Yep, yep, if you have other, please tell me. I already saw most of them.