The Devotion of Suspect X

Professor Tang (Wang Kai), a physicist who works as a consultant for the police, is brought in to assist in a murder investigation. A man has been murdered and his ex-wife is under suspicion. When Trang finds that a longtime rival and friend (Zhang Luyi) from his early university days may be involved, a battle of the minds ensues.

A Chinese adaptation of the 2005 Japanese novel by Keigo Higashino titled The Devotion of Suspect X.