Plurality

Plurality is a 2021 Taiwanese psychological thriller film directed by Aozaru Shiao and co-written by Shiao and Hung Tzu-yung. Starring Tony Yang, Sandrine Pinna, Frederick Lee, Chen Yi-wen, JC Lin, and Gingle Wang, the film revolves around a death row prisoner (Yang) whose body is implanted with five personas of deceased abduction suspects by a scientist (Pinna) and a detective (Lee), in hopes of rescuing the abducted children.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.