Reveal or discover (7)
I believe the answer is:
unearth
I believe this clue is a double definition.
'reveal' is the first definition.
(I know that unearth is a more specific form of the action reveal)
'discover' is the second definition.
(to unearth is to discover or find)
(Other definitions for unearth that I've seen before include "Cut a certain wire" , "Dig up for a hunter" , "Disclose" , "Disinter" , "dredge up" .)