The oil painting has been found.
The buyer who purchased the oil painting is dead.
Now the only one who knows the truth of the case is the mastermind of the oil painting heist, the Professor.
The Professor is on the run, and Luke has applied for a warrant.
As for Tom Stone's doubts, Luke has some speculations.
According to clues found by the police, the Professor initially didn't intend to rob but to steal, targeting some of the most precious paintings in the Getty Museum, as confirmed by several arrested accomplices.
It's just that the security measures at the Getty Museum were too tight, making the theft plan difficult to execute, so it was changed to robbing the paintings.
The danger was reduced, but the variables increased, and the looted paintings couldn't be chosen.
This can be seen from the ransom money prepared by Albus Stone as well.