With this, it becomes clear what had actually happened: after Alice (with whom Tom had been having an affair) confessed to being a shoplifter to Tom on the first night, he realized the pattern and saw an opportunity. He changed out his own card – "YOU are an ALCOHOLIC", the missing A – for a more condemning one, "YOU are a HIT-AND-RUN KILLER", knowing both secrets applied to Lee. He arranged for Lee to see his card and think the game's purpose was to expose her for her role in Sheila's death. Then he murdered Clinton on the second night, planning to frame Lee for the deed – made much easier after (impersonating Clinton) he taunted Lee into attacking the corpse and thinking she had killed Clinton.