Scooby Doo and his friends follow a gangster to obtain evidence of his crimes, but beware! If they go too close, they will be discovered. Follow the gangster on your van, staying always at a safe distance. When he stops, be attentive to any suspicious action and take a photo of it to incriminate him. With 6 pictures you have enough proofs to go to the police.
Arrow keys to drive the van, space bar to brake suddenly. When you will take a photo: arrow keys up/down to crouch/stand; space bar to take a shot. For the rest, interact with a mouse click when dialogs appear to warn you about possible dangers and give you advice about how to proceed with the suspect.