Behold fury in French department? (5)
I believe the answer is:
loire
'french department?' is the definition.
(I've seen this before)
'behold fury' is the wordplay.
'behold' becomes 'lo' (archaic exclamation meaning 'look!').
'fury' becomes 'ire' (ire is intense rage).
'lo'+'ire'='LOIRE'
'in' acts as a link.
(Other definitions for loire that I've seen before include "flower abroad" , "banker" , "French department" , "Wine region" , "French runner" .)