Kieran had been swimming regularly for nearly two years. He had been overweight and bullied as a kid, but at the age of eighteen, he was now slim and toned, with a strong, athletic physique. He visited the pool for an hour at 6 am, three or four times a week. It was a small town pool, and usually empty in the morning except for a couple of old ladies doing lethargic backstroke. Nothing much of interest had ever happened i...