Can anyone recognize this manhwa ?

I’m not sure whats the name i need help with it.. i think i read this 5 years ago back when i was in high school it was about i think a serial killer that got reincarnated into a psychiatrist or something.. honestly thats the only thing i remember and i think it was BL.. i also remember that his patient also was connected to his past life, i could be mistaken i’m not sure
I think he had blonde hair or so..
Help