Certain Killer & A Killer's Key - Limited Edition (Blu-ray)Anticipating the cool aesthetic of Seijun Suzuki's Branded to Kill and based on a crime novel by Shinji Fujiwara, the author of the original material for the same year's A Colt is My Passport, A Certain Killer and A Killer's Key are similarly stylish contemporary hitman thrillers directed by Daiei's top director of jidai geki, Kazuo Mori (The Tale of Zatoichi Continues) and starring the studio's top actor Raiz Ichikawa (Shinobi: Band of Assassins,