Who killed Cyril Maude and why?


Hint 1 of 5:
Again, the murder weapon will tell you who the murderer was.

Hint 2 of 5:
He's famous for using a knife.

Hint 3 of 5:
Curtis Twiggs is your man.

Hint 4 of 5:
Nathan Revell was embezzling money from his employers.

Hint 5 of 5:
Lots of money.