The year is 1968, and as France is torn apart by social and political anarchy, the noted eccentric and insomniac Anton Vowl goes missing. Ransacking his Paris flat, his best friends scour his diary for clues to his whereabouts. At first glance these pages reveal nothing but Vowl's penchant for word games, especially for "lipograms," compositions in which the use of a particular letter is suppressed. But as the friends work out Vowl's…