Using Dual Spells!
While they were sitting over the couches facing one another watching the 3D screen created from Jeremy's space projection skills, Mia and Jeremy saw Bobby dig the earth up from the pit that had formed from Assassin No.10's landing. When the pit had enough room to fit a corpse, he put the dead body of Assassin No.10 into the pit, and he again covered the corpse with dirt and earth, and he buried it in the pit.
Later, they witnessed Bobby stealing a huge rock from among the many stones piled on the foot of the small hill and installing it just above the grave of Assassin with the code name No.10. He then began to carve some words on the stone with the small knife he had taken from the previous assassin he killed in Aphrodite City.
"Hmm, what're the words he is curving in that stone? I'm curious. Can you zoom in a bit so that we can see more clearly?" Mia demanded with a curious expression on her face.