Person paid to look at books (7)
I believe the answer is:
auditor
'person' is the definition.
(auditor is a kind of person)
'paid to look at books' is the wordplay.
I cannot quite understand how this works, but
'to' is within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for auditor that I've seen before include "Accountant - listener" , "Accounts verifier" , "Business accountant" , "I'll check expense involved" , "Worker in accounts" .)