Lock Up is a 1989 American prison drama film directed by John Flynn. The story follows a man named Frank Leone, who is nearing the end of his prison sentence. However, he is transferred to a maximum-security prison run by a sadistic warden who has a personal vendetta against him. Frank must navigate the dangerous prison environment while trying to survive and outsmart the warden.

Sylvester Stallone, Donald Sutherland, John Amos