Midsummer's Equation

An adaptation of Higashino Keigo's sixth novel in the popular Galileo series. Professor Yukawa Manabu must solve the mysteries of seemingly accidental death of another guest at the countryside motel he was spending his vacation in.

Midsummer's Equation is a 2013 mystery movie directed by Hiroshi Nishitani, starring Masaharu Fukuyama, Kazuki Kitamura, Yuriko Yoshitaka. It holds an IMDb rating of 6.6/10 from 1,320 votes and runs 2h 9m.