Lying as before, on getting caught (5)
I believe the answer is:
prone
'lying' is the definition.
(I've seen this before)
'before on getting caught' is the wordplay.
'before' becomes 'pre'.
'getting caught' indicates putting letters inside.
'pre' placed around 'on' is 'PRONE'.
'as' acts as a link.
(Other definitions for prone that I've seen before include "Recumbent, likely" , "Given" , "Lying face downward" , "Prostrate" , "Placed face down" .)