A very unfortunate incident occurred, a man was found face down in the local pond. All that was visible were a pair of size 6 boots sticking out of the muddy water. Everyone thought he died of drowning, but later, evidence discovered that he was hung before he was dumped into the pond! But the only clue to the crime was a single broken finger nail jammed into his bruised neck. Later that day, the police had called up the CSI (crime scene investigators) to search the finger nail for the DNA. Sadly the killer has not, as yet, been found.