Go to the 3rd level. Then go to the huge jump that lands you on the harbor.Follow the road you land on until the ship, C-Spanker, comes into veiw. Now go east until you get to Davey Jones Hamper. You'll notice two crates on top of eachother. Double jump AROUND the crates and walk into the wall. You will be in an empty house that the cops can't get you in.