On the run from Henry II’s wrath, Thomas Becket sent his confidant, Herbert of Bosham, to gather money from Canterbury and one other thing: a certain “little book.”
What that book was has been a mystery, but a few historians chasing down the clues think they may have found it.
Has Thomas Becket's treasured 'little book' been found? [BBC News]
Either the scenario of friends of the Bishop collecting supplies for exile under threat of death or the historians chasing down the identity of a mysterious book would make great adventures for an RPG; bonus to the DM who can run them simultaneously with players having a character in each era ...