Publisher's Synopsis
Before "Bones," before "CSI," before "Quincy, M.E." there was Dr. John Thorndyke. In The Red Thumb Mark valuable diamonds are missing and the thumb print of Reuben Hornby is discovered in a drop of blood on a paper at the bottom of the safe. The experts of Scotland Yard are all in agreement. It would seem an open and shut case. Or is it? For reasons known only to himself, Dr. John Thorndyke has doubts about the authenticity and origins of the evidence. Now he must make his case in open court using the latest techniques of Edwardian science to prove the innocence of a young man.
