Im Yoona the best detective Seoul has to offer is facing quite the dilema. A serial killer is on the loose however this one is unlike anything she has every seen before. Desperate Yoona must ask the ex serial killer Kwon Yuri for help on how to capture the assasin , will this case be the only thing cracked or so will the detectives heart ?  ForewordIm Yoona the best detective Seoul has to offer is facing quite the dilema. A serial killer is on the loose however this one is unlike anything she has every seen before. Desperate Yoona must ask the ex serial killer Kwon Yuri for help on how to capture the assasin , will this case be the only thing cracked or so will the detectives heart ? Characters: Im Yoona- Prodigy detective in homocide devision Kwon Yuri Ex serial killer, has a deep interest in Yoona