The Usual Suspects (1995) is a movie about five conmen, who are brought in for questioning by the police. None of the are guilty, so they join together to perform a retaliation against the police. One of the conmen, Roger “Verbal” Kint (Kevin Spacey) is brought in for questioning regarding a boat explosion resulting in the death of 27 people.
This is a very interesting movie and it is where the name Keyser Söze comes from, which is references in a number of movies and other places. Since this is already a classic, there is not much to be said. Just go and see it if you haven’t!