Oh, Keely -- in trouble? I may see you through this (7)
I believe the answer is:
keyhole
'i may see you through this' is the definition.
(someone may look through a keyhole)
'oh keely in trouble?' is the wordplay.
'in trouble?' indicates an anagram (I've seen 'in trouble' mean this).
'oh'+'keely'='ohkeely'
'ohkeely' anagrammed gives 'KEYHOLE'.
(Other definitions for keyhole that I've seen before include "Lock entry" , "Opening in door - kind of surgery" , "Aperture for lock opening" , "Type of surgery" , "may cover a number of wards" .)