Ah Ari! I wuz getting worried when I didn't 'see' you earlier. And, Ixion, good to see you too. I thought #1 would not be too tough, you certainly saw it. Anyway, here is my working:-
1. key = F; to = +; anag (open) of “or shut” = ourths; yielding FOURTHS or “four of them make one”.
2. pitch as cloister “is” AN ANAGRAM “of” catholic priests
3. seconds of “ruling and add forty” = UNDO = overturn
4. accomplished = over; the pointless = th; argument = row; OVERTHROW = best (Chambers Thes)
5. novel has dual meanings ,anag indicator & book. DOMBEY AND SON
Hope you enjoyed 'em and that ginge has found his/her way home.
Best thing today was to see RE back.