Bill's story (7)
I believe the answer is:
account
I believe this is a double definition.
'bill's' is the first definition.
('account' can be a synonym of 'bill')
'story' is the second definition.
('account' can be a synonym of 'story')
(Other definitions for account that I've seen before include "Bill; importance" , "Profitable to turn to this" , "Bill - narrative" , "Tell" , "Description; importance" .)