The Murder Mystery Solved by DNA From the Back of a Postage Stamp

yara gambirasioWhen, in the autumn of 2012, police went to the home of the widow of a bus driver in a small town in northern Italy, they at long last struck lucky. The widow produced a box of documents that contained her husband’s paper driving licence, to which was affixed a marca da bollo (a postage stamp used for tax purposes). Perhaps – they reasoned – the back of the stamp would contain the dead man’s DNA, if, that is, he had licked the stamp himself before sticking it on to the licence.