Presented in October folder 2017 Setagaya ward, Tokyo Inspector Kosuke Iwata, newly transferred to Tokyo's homicide department, is assigned a new partner and a secondhand case. Blunt, hard as nails and shunned by her colleagues, Assistant Inspector Noriko Sakai is a partner Iwata decides it would be unwise to cross. A case that's complicated - a family of four murdered in their own home by a killer who then ate ice cream, surfed the web and painted a hideous black sun on the bedroom ceiling before he left in broad daylight. A case that so haunted the original investigator that he threw himself off the city's famous Rainbow Bridge.