By Toni Mount My amateur sleuth, Seb Foxley, being trained as a scribe and having a keen eye, has a knack for spotting forged documents in fifteenth-century London. In The Colour of Evil, Seb is called upon to check out some suspect documents for the Bishop of London. This is a side issue to add to our hero’s burden of things he must do but such things really did go on in medieval times. The monks at Westminster Abbey were notorious for making illicit changes to important documents or even forging new ones on old parchment to benefit themselves.  As a novelist, as well as a writer of factual history…