He who whispers

'It almost seemed that the murder, if it was a murder, must have been committed by someone who could rise up unsupported in the air...'When Miles Hammond is invited to a meeting of the Murder Club in London, he is met instead with just two other guests and is treated to a strange tale of an impossible crime in France from years before; the murder of a man on a tower with only one staircase, under[Bokinfo]