The Last Laugh

Detective Dirk Nickel couldn't care less about clowns, but his is a city without laughs where clowns are a dying breed.
Then, one day Nickel is framed - branded a 'chuckler' - and the heat is on.
Can Nickel uncover who framed him in time, maybe even bring down the city-wide conspiracy against clowns in the bargain... or will the last laugh be on him?