When you have only 1 suspect, 1 weapon, 1 room left unmarked — that’s your accusation.
Later: You suggest No one shows a card → Write those 3 in a corner as “possible envelope combo.” simpsons cluedo sheets
Or search online for “Simpsons Cluedo detective sheet PDF” — many fan-made sheets match the show’s yellow/blue theme with character icons. When you have only 1 suspect, 1 weapon,
Round 1: You suggest Marge shows you Living Room card → cross off Living Room as solution. When you have only 1 suspect