Right to go in for confession (9)
I believe the answer is:
admission
I believe this clue is a double definition.
'right to go in' is the first definition.
(I've seen this before)
'confession' is the second definition.
(I've seen this before)
'for' is the link.
(Other definitions for admission that I've seen before include "Entrance fee" , "guilty plea, perhaps" , "Letting in - letting out" , "Acknowledge of the truth of something" , "Acknowledgement < of entry" .)