Ace of Spades || the killer

The book Ace of spades is a story based on a murder mystery and contemporary romance. The main plot revolves around an excellent criminologist Huang Renjun who is the head of the crime department and is following the case of a series of murders by a killer called 'ace of spades. while following him a forensic specialist park Seohyun who is also her university fellow is transferred to the department and the group of criminologist work to find the killer. In between finding the killer many of the secrets of the past are revealed along with Renjun's and Seohyun's traumatic yet romantic past.