Out for Justice is a 1991 American crime thriller action film directed by John Flynn, and produced by and starring Steven Seagal.
 The film is about a veteran police detective who vows to kill the crazy, drug-addicted mafioso who murdered his partner.
 It marked Julianna Margulies' film debut.
The Jerusalem File is a 1972 film directed by John Flynn.
 It stars Bruce Davison, Nicol Williamson, Daria Halprin, and Donald Pleasence.
Protection is a 2001 thriller film directed by John Flynn.
 In this movie, a former mobster, now in the Witness Protection Program, finds himself unable to change his ways.
 Filming took place in Canada.
 It was Flynn's last movie.
Touched is a 1983 American romantic drama film starring Robert Hays and directed by John Flynn.
The Outfit is a 1973 crime film directed by John Flynn.
 It stars Robert Duvall, Karen Black, Joe Don Baker and Robert Ryan.
Nails is a 1992 film directed by John Flynn, written by Larry Ferguson, and starring Dennis Hopper.
 It was made for Showtime but released theatrically in Europe.
The Sergeant is a 1968 American drama film starring Rod Steiger and John Phillip Law, directed by John Flynn, and released by Warner Bros.-Seven Arts.
A prison film is a film genre concerned with prison life and often prison escape.
 These films range from acclaimed dramas examining the nature of prisons, such as "Cool Hand Luke", "Midnight Express", "Brubaker", "Escape from Alcatraz", "The Shawshank Redemption", and "Kiss of the Spider Woman" to actioners like "Lock Up" and "Undisputed", and even comedies satirizing the genre like "Stir Crazy", "Life", and "Let's Go To Prison".
Brainscan is a 1994 American science fiction horror film directed by John Flynn and written by Brian Owens and Andrew Kevin Walker.
 The film stars Edward Furlong, Frank Langella, Amy Hargreaves, Jamie Marsh, and T. Ryder Smith.
 Music was composed by movie composer George S. Clinton.
Lock Up is a 1989 American prison drama film directed by John Flynn.
 Sylvester Stallone, Donald Sutherland, Tom Sizemore, and John Amos star.
 It was released in the United States on August 4, 1989.

Question: A Prison film is one like which drama film directed by John Flynn?
Answer: Lock Up