River rising above Hebrew character in drama (7)
I believe the answer is:
macbeth
'drama' is the definition.
(play by Shakespeare)
'river rising above hebrew character' is the wordplay.
'river' becomes 'cam' (river in Cambridge, England).
'rising' shows that the letters should be reversed in order (going up in a down clue).
'above' is a charade indicator (letters next to each other).
'hebrew character' becomes 'beth' (letter of the Hebrew alphabet).
'cam' reversed gives 'mac'.
'mac'+'beth'='MACBETH'
'in' acts as a link.
(Other definitions for macbeth that I've seen before include "Shakespeare's Scottish play, considered unlucky" , "In sleep murderer" , "dramatic role" , "play with tragic results" , "Shakespeare play" .)