Zettai Reido is a Japanese police procedural television drama. The first season, subtitled Mikaiketsu Jiken Tokumei Sōsa, was set in a fictional version of the Tokyo Metropolitan Police Department division that specializes in investigating cold cases, which is based on an actual division established in Japan in 2009. The first season aired from April 13 to June 22, 2010 on Fuji TV's Kakku time-slot. It premiered to a 18% rating. A special two-hour long episode which served as conclusion to the first series was aired on July 8, 2011.