Summer Equation

Keigo Higashino is the author of more than fifty novels, who has been popular in Japan for twenty years. Now, each of his new works becomes an event. He has received all the major literary awards and prizes in his homeland, and dozens of adaptations have been made based on his novels, spilling the dark atmosphere of his detective stories onto the screens. A boy named Kyohei spends his summer vacation at a ryokan managed by his aunt's family. Yukawa, who has come on business, also stays there. One of the other guests at the old hotel is found dead on the beach. The victim is a former police officer, and the police quickly dismiss the version of accidental death. But what really happened and what truth is Yukawa going to uncover?