Book turns (4)
I believe the answer is:
acts
This clue is a double definition.
'book' is the first definition.
(book of the Bible)
'turns' is the second definition.
('act' can be a synonym of 'turn')
(Other definitions for acts that I've seen before include "Behaves or plays" , "bands, comedians, etc" , "the entertainment for a revue?" , "Turns" , "Theatrical deeds" .)