the heat is on

Since the Serging, my "friends" at work have been trying to figure out who did it.  They've been accusing each other.  Even accusing the Serg.  They fingered me a couple times, but I didn't like it.  I tried to distract them with new rounds of Serging, but the heat is on.  I need to get it off.  An opportunity for yet another prank.