Catchphrase from heavy-going books, setter falls for solver in the second (2,2,2,3)
I believe the answer is:
to me to you
'catchphrase from heavy-going' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'books setter falls for solver in the second' is the wordplay.
I cannot quite understand how this works, but
'setter' could be 'me' (the setter of the clue) and 'me' is present in the answer.
'books' could be 'ot' (Old Testament) and 'ot' is located in the leftover letters.
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is present in the answer.
'solver' could be 'you' (the person solving the clue!) and 'you' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?