14 across
Subject’s
alter
ego
‘Gary’
seen
outside
pub
(9)
Subject’s alter ego ‘Gary’ seen outside pub (9)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
So Subject is what we're after — a school subject, in fact. The trick is that 'alter' tells you to rearrange the letters of 'ego' and 'Gary', and then 'seen outside' means those rearranged letters go around PH (short for public house, i.e. 'pub'), giving you the full nine-letter answer.