Im nearly there but its been a struggle this week.
I think the answer to 38d ( Involved in Times publication popularly - a series of books) is Byzantine but cannot parse it.
20d Dog that is leaping after biting. Ive got S---/P-I !!
The word play in this clue is Byzantine in itself! Thanks very much. Ive finished at last. is it just me or has this weeks crossword been tougher than usual?
Yes, tough one this weekend. The Saturday Jumbo seems to follow the pattern of tough - medium - easier over a 3-week cycle. Possibly three setters taking it in turns (like Moorey, Mayer and Pearce do in the Sunday Times).