Bureau concludes; kill to capture (4)
I believe the answer is:
desk
'bureau' is the definition.
(I've seen this before)
'concludes kill to capture' is the wordplay.
'to capture' says the answer is hidden in the clue (I've seen 'captured' mean this).
'DESK' can be found hidden inside 'concludes kill'.
(Other definitions for desk that I've seen before include "Secretaire" , "Hotel counter; newspaper section" , "Escritoire - service counter" , "Office workplace" , "Item of office (or schoolroom) furniture" .)