Who Killed Ben on "Only Murders in the Building?" The Season Finale Cracked the Case

KT (Allison Gunn) is the stage manager to whom Ben gave a very hard time. Did she snap and take him out? KT plays her biggest role yet in episode six, though nothing incriminating arises. We do know that her office door was locked on opening night when she claims to never lock it, and she has all sorts of documents and a paper shredder. Mabel finds rat poison in her office, and Howard tries to figure out just what was being shredded the night of Ben's murder. In episode nine, they're convinced it was Donna who was in there, and KT remains a stern and stubborn stage manager.

Our verdict: Not guilty