At 19 minutes into the episode Dexter is looking for information on Travis Marshall on his computer. The voice-over says he lives on 1742 Vanderan St. but the driver's license clearly visible on screen lists his address as 1026 Vanderan St.
Also if you check the DOB in the driver licence is 11-24-1977 and was issued on 09-23-1990. That means that Florida's Department Of Motor Vehicles issued a driver licence to a 12 years old kid. Doesn't make sense.