H house

An eccentric genius profiler works with a detective with photographic memory and a police chief to go after a serial killer who was thought to be dead.

"LUCA" (Last Universal Common Ancestor) is based on Charles Darwin's proposition that all species of life have descended over time from common ancestors.

Former lawyer Ku Do Han investigates unsolved crimes, piecing together clues from current cases. He's joined by reporter Cheon Na Yeon and con artist No Sang Cheon as they unravel the truth and seek justice.

The story is a mystery romance, with Jae-i's search for her brother taking her on a journey of self-discovery and love. Along the way, she must confront the dark secrets of her family and the dangers of the Joseon era.