Martin (1992)

S2E17 Suspicious Minds

Martin discovers that his new CD Walkman is missing. Stan persuades him that one of his friends, who all have keys to his place, must have taken it. Fueled by suspicion, Martin confronts each of his close friends about the theft. However, he soon learns he was mistaken when the actual culprit returns the Walkman to him, completely unaware of the chaos their actions caused.