Take a look at those prints!

Without a word, the two of you combine the objects of interest. ID takes out the prints she has for each of the Twilight Gang members, you take out the tape, and within seconds you have a match. Silent Killer. He must have had the bloody knife at some point, and at another swiped his finger across the dusty computer. You hand her the knife, just to make sure, and she quickly confirms that as well. "Got anything else for me?"