Reporting finished in pen (8)
I believe the answer is:
coverage
'reporting' is the definition.
('coverage' can be a synonym of 'reporting')
'finished in pen' is the wordplay.
'finished' becomes 'over' ('over' can be similar in meaning to 'finished').
'in' indicates putting letters inside.
'pen' becomes 'cage' (I've seen this before).
'over' inserted inside 'cage' is 'COVERAGE'.
(Other definitions for coverage that I've seen before include "level of press attention" , "News reports" , "Treatment of news" , "Media reporting" , "news attention" .)