Island of Fire

Someone in a prison run by a corrupt warden fakes the deaths of convicts to later use them as expendable assassins. A police officer is sent into the prison to gather evidence of the corruption.

A young police officer "makes a mess" of a police operation, shoots a man in self-defense, and ends up in prison. There he learns that the world isn't black and white, but has many shades of gray, and makes new friends and enemies.