What is the name of the horror film when a wrongly convicted man kidnaps all the people involved in his trial once he's released from prison and tries to get them to prove his innocence?

The film you're referring to is called "The Life of David Gale." In this psychological thriller, a man wrongfully convicted of murder seeks revenge on those who played a role in his conviction by kidnapping them and forcing them to confront the truth. The story explores themes of justice, morality, and the flaws within the legal system.