Based on Keigo Higashino’s award-winning novel, THE DEVOTION OF SUSPECT X follows a professor (Wang Kai) assisting in a murder investigation, only to find that a longtime rival and friend (Zhang Luyi) from his early university days may be involved.

A male corpse is discovered with a smashed face and burned hands. Strangely, the cause of death is determined to be strangulation. When Detective Kaoru Utsumi attempts to corroborate the victim’s ex-wife’s alibi she discovers the mysterious neighbor and only a few small clues to help her disprove a seemingly "airtight" alibi...

When a single mother her teenage daughter becomes ensnared in a deadly crime, find an unexpected ally in their neighbor, a simple, doting but genius teacher math teacher comes to aid, while a tenacious cop digs into the case.

A brilliant math teacher formulates the perfect cover-up after his neighbor murders her abusive ex-husband.