Let's uncover the mystery behind the murder of Colin Sullivan by Sergeant Sean Dignam in the 2006 crime thriller The Departed. The film follows two undercover agents working for opposite sides of the law in Boston. While the motives behind Sullivan's murder may seem clear at first, we explore the possible complexities behind Dignam's actions. We also discuss the symbolism behind the rat, which appears throughout the movie and in the final scene, representing betrayal and the devastating consequences it has on individuals and communities.
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