Crime films have long been a cornerstone of cinema, offering viewers a gritty lens to explore violence, corruption, morality and the human condition. Characters in crime films are often complex; the distinction between heroes and villains isn't always inherently clear and there's often a seductive element to even the most vile characters that oftentimes makes it easier to root for them. The best entries in this genre don't just entertain us, they provoke, unsettle and linger in our minds long after the credits roll.