Knock Three-One-Two by Fredric Brown

Benny Knox had left his newsstand early; usually he didn't leave until eleven o'clock or when he'd sold out on papers, whichever came first. But tonight at a quarter after ten there'd been only a few papers left and he'd decided not to wait any longer; he'd waited that long only because Mr. Hoff had told him to finish out the evening and then go to the police station to turn himself in. That had disappointed him; he had hoped that Mr. Hoff and his partner would take him in themselves in the squad car, with the siren going and the red light flashing. He had had rides in automobiles only a few times in his life and never one in a squad car.

Now inside the police station he stood in front of the tall receiving desk, at which a gray-haired man was busily writing. The man hadn't looked up yet. That is, he'd looked up when Benny had come in but then had looked down and started writing again. Benny stood there waiting and feeling awkward, but he didn't want to interrupt the man. Under Benny's arm was clutched the cigar box, now with a rubber band around it, that held his receipts for the day. One thing about the money in it puzzled him. He'd counted it before he left the stand, because he always did, and there were about ten dollars less in it than there should have been. He couldn't figure out what could have happened to ten dollars -- except for a vague recollection of someone laughing at him; he remembered feeling angry about that but he couldn't remember who the someone had been or how it connected with the ten dollars.