There is a movie "Slow burn". Can you help me summarize some important points about this movie

1. The 1989 movie Slow Burn, starring Ivan Rogers, William Smith, Anthony James, and Stephen M.D. Chang, was directed by John Eyres.
2. A Mafia hitman kills a veteran cop's partner, and the veteran cop then pursues the hitman.
3. A rookie cop who is pursuing the hitman for personal reasons is also after him.