The Perfect Insider

A pair of brilliant minds, student Moe Nishinosono (played by Emi Takei) and associate professor Sohei Saikawa (played by Gou Ayano), team up to solve murder mysteries. Based on a 1996 novel by Hiroshi Mori, this dorama employs a slightly different format than usual: the 10 episode series is actually 5 pairs of episodes where a mystery typically comes up in the first episode and is solved in the second. Most of the plots share a common theme of things happening in inescapably locked rooms. There is also an ongoing story involving the compelling character of Shiki Magata (played by Akari Hayami), a seemingly evil genius whose past and intentions keep you guessing till the very end.