The Ultroom Error by Jerry Sohl, Science Fiction, Adventure, Fantasy

"We'll never be able to prosecute in this case," the states attorney said. "At least not on a drunken driving basis."

"I can't get over it," the chief of police said. "I've got at least six men who will swear the man was drunk. He staggered, reeled and gave the usual drunk talk. He reeked of whiskey."

The prosecutor handed the report over the desk. "Here's the analysis. Not a trace of alcohol. He couldn't have even had a smell of near beer. Here's another report. This is his physical exam made not long afterwards. The man was in perfect health. Only variations are he had a scar on his leg where something, probably a dog, bit him once. And then a scar on his chest. It looked like an old gunshot wound, they said. Must have happened years ago."

"That's odd. The man who accosted Mrs. Laughton in the afternoon was bitten by their dog. Later that night she said she shot the same man in the chest. Since the scars are healed it obviously couldn't be the same man. But there's a real coincidence for you. And speaking of the dogbite, the Laughton dog died that night. His menu evidently didn't agree with him. Never did figure what killed him, actually."