Card 43 of 82
The Car Radio
A man is driving through the city. He turns on the radio and then shoots himself.
Solution: The man was a radio presenter who had planned an alibi. Before leaving the studio he had left a pre-recorded CD of his voice presenting his show (to give himself time to drive home and kill his wife). He was driving back to the studio when he turned on the radio and discovered that the CD had got stuck on one sentence. His alibi had collapsed.