Hint 1
Read the email from Yusuf Rahman. What do you think the Imam had discovered?

Hint 2
In their haste, the murderer attempted to destroy all evidence after attacking the Imam in his office. However, not everything was successfully removed.

Hint 3
A trail of evidence still remains.

Hint 4
The murderer believed they had removed the evidence. But something remains where they thought nothing would be found.Something there reveals who silenced Imam Kareem.