We have all played that wonderful game of "Clue", wandering through the hallways of the Boddy Mansion, trying to find the clues as to who might have dispatched Mr. Boddy.
"Miss Scarlett in the billiard room with a knife..."
And most of us have watched at least one of the CSI television franchises about forensic detectives who use DNA and other evidence to solve cold cases. By the end of the hour, the detectives have solved the case using 21st century forensic technology, some of which has not yet been invented. But, what the heck, it's television and, like the game of "Clue", it's meant to be entertaining. It's not real life.
"Professor Plum in the conservatory with a candlestick..."