Detective Xingmin stumbles onto the trail of a ghoulish serial killer, who only targets prostitutes. As Xingmin hunts the murderer, she finds herself grappling with her own childhood trauma. Can she conquer her own demons to uncover the killer's truth? Written by Tu Hu and directed by Candy Li, BLOOD 13 is a stylish true crime shocker that was made from a female perspective. And that refreshing twist is what sets it apart from almost every other 21st century serial killer movie.