Thomas Edward Sizemore Jr. was an American actor. Born in Detroit, Michigan, he started his career with supporting appearances in Born on the Fourth of July (1989), Lock Up (1989), and Blue Steel (1990). These appearances led to more prominent roles in films like Passenger 57 (1992), True Romance (1993), Striking Distance (1993), Natural Born Killers (1994), Strange Days (1995), Heat (1995), and The Relic (1997).

Lock Up is a 1989 American prison action film directed by John Flynn. It stars Sylvester Stallone, Donald Sutherland, John Amos, and Tom Sizemore. It was released in the United States on August 4, 1989.