 PLOT: SPOILER: When Peter is driving his car and picks up Buddy, he  says he just found the kidnappers car and is now bringing it to the  police station. Buddy enters the car, and when he sees in the glove  compartment the same chocolate bars he was given by the kidnapper,  he then knows that Peter is the kidnapper. But if Peter was telling  the truth and really just found the kidnappers car, it would be no  surprise for the chocolate bars to be there (as well as for other  things belonging to the kidnapper).