Instructions
Load your "Pokémon" game any time between 2 a.m. and 5 a.m. If you are not awake during this time, you can change the Nintendo DS clock. To do so, turn on the DS with no game inserted. Tap the "Settings" icon and then tap the "Calendar." Tap the "Clock" icon and use the arrows to set the time to 2 a.m.
Head to Hearthome City and walk south to get to Route 212, or walk west from Pastoria City to get there. Enter the mansion by the pond.
Enter Mr. Backlot's office. The security guard that watched the statue during the day is gone.
Walk up to the statue and press the "A" button to investigate it. You receive a message stating that the statue looks expensive. When you touch it, you get your fingerprints on the statue.