Mariko is a forensic scientist working at the Kyoto PD Crime Lab. Her credo is “science never lies” and she delves into the truth of the case with her colleagues with their specialized skills and knowledge in forensic medicine, physics, chemistry etc. Mariko’s steadfast belief in science makes her stand against conventional institutional ethics of the police department, diehard detectives averse to scientific investigation and sometimes even with her own colleagues, but she stays faithful to her belief in science and continues to pursue the truth.
One day, Hikojiro receives an emergency call from inn proprietress Shino Ogawa to examine Tadahiko Mori, a guest complaining of stomach pain. Mori, who owns an art gallery in Tokyo, has come to Kyoto on a trip with his only daughter, high school student Nanami. Hikojiro gives him his business card, telling him to contact him if the pain comes back. However, the next day, Mori is found dead...!
