Luke straightened out his thoughts; there are now four questions.
The first question is whether Albus Stone was the buyer of the ten stolen oil paintings.
The second question is whether Albus Stone died naturally or was murdered.
If it was murder, is it related to the ten stolen oil paintings?
The third question is, if Albus Stone died naturally and was terminally ill, why was he still dealing with oil paintings?
The fourth question is, where are the oil paintings?
If Albus Stone were still alive, Luke would just ask him directly.
Now that Albus Stone is dead, Luke needs to investigate himself, which makes the task much more difficult.
These doubts compelled Luke to leave Albus Stone's house.
He needs more evidence and clues to either prove his judgment or overturn his assumptions.
Since Albus Stone has just died and without sufficient evidence, Luke cannot rashly search the mourning hall.
Such actions are taboo and likely to upset the family.
...
