1989 film by John Flynn
Lock Up is a 1989 American prison action film directed by John Flynn, and starring Sylvester Stallone, Donald Sutherland, John Amos and Tom Sizemore. It was released in the United States on August 4, 1989.
Stallone later said it was "Not a film that was produced and performed with enough maturity to really make a significant impact on the audience or my career. And that's the truth".
Plot summary adapted from Wikipedia, licensed under CC BY-SA 4.0.