About face leading to lie (6)
I believe the answer is:
reside
'lie' is the definition.
(I've seen this in other clues)
'about face' is the wordplay.
'about' becomes 're' (regarding).
'face' becomes 'side' ('side' can be a synonym of 'face'**).
're'+'side'='RESIDE'
'leading to' acts as a link.
(Other definitions for reside that I've seen before include "Dwell permanently" , "Inhabit" , "'Live, dwell (6)'" , "Dwell in desire" , "Stay - desire (anag)" .)