Bob was being blackmailed by Marvin to pay him $50 after Marvin discovered Bob cheating on an exam. Bob told his friend Larry about the blackmail but didn't tell him how Marvin discovered the cheating. Larry suggested confronting Marvin since Bob couldn't pay, but Bob was afraid to fight Marvin. Before leaving for the day, Bob found another note in his locker from Marvin demanding the $50 by Monday at midday.