Amos's cell phone rang. Then, he got up and walked out.
Outside the door, Clint Zuckerberg had just arrived with breakfast. He handed it to Amos Granger and spoke.
"Yesterday, I checked out the place where Miss George and the Old Master were at. There is something strange there. I took some pictures. Here, have a look."
Amos took the phone and swiped through the pictures. Clint spoke again.
"President Granger, look here. You would miss it if you don't look at it closely. There are some shallow tracks here. Whoever did it had deliberately covered their tracks and left some heavy footprints behind. That was why there were still some traces left. According to Miss George, Old Master was the only one there, so why were there footprints behind him?"
"Anything else?" Amos asked.
Clint shook his head, "Sorry, we only have this clue. The person left only footprints. I've searched everywhere, but I couldn't find anything else."