I wonder if I should create a cosy or comfy shelf? For the e-books, anyway. I know where I keep my comfort hard copies. I find I skip the technical parts of detective stories like this (the railway timetable sections - though in this one it's several pages of deciphering secret letters) much as I used to skip the technical descriptions in Golden Age science fiction. Oh, Doc Smith, you were always a fast read! Anyway, long passages of detail aside, there's the slow progress of a witty romance and a mystery I thought I'd got but there was always another ludicrous twist.