But the problem still remain even though we know how the murderer got out and the fact that he is very agile , we still don't know how he got in and the fact that the gold of Adolphe is still there mean this is very unlikely to be a normal thievery, the motive of the murderer is still unknown
Another strange thing about the murder is that the body is shoved up into the chimney, very tightly, tight enough that it take 4 men to pull the body down , from what we know so far not only the murderer have to be agile but also very strong.
Since the murder is so cruel and abysmal I made an assumption that the murderer is a madman escape from some hospital , then Dupin show me the strange hair that he found from the crime scene , from the look of it , it is not human hair.
The hand mark drawn in the paper is much bigger than my hand, After that Dupin show me a book about orang-outang the animal that are agile , strong , clever and dangerous.
Even though the orang-outang seem fitting to be the murderer it still not clear because there were two voices arguing the day murder occurred , we can assume that the french man keep orang-outang as a pet but one day it escaped and killed the victims
there are evidences leading toward that the owner of orng outang is a sailor because of the dropped ribbom