The bonus cases stacked atop your desk/disc include "The Nicholson Electroplating," "The Consul's Car," "Reefer Madness," "The Naked City" and "A Slip of the Tongue." They cover the arson, vice and traffic beats, and are offered alongside The Badge Pursuit Challenge and all unlockable outfits and weapons.
There's also a new prologue that explains why Cole Phelps transforms into Sergeant Frank Drebin every time he gets behind the wheel of a car.
(Or is there? Truth, doubt, lie, etc.)