Pay attention to Flash Gordon's origin being leaked (6)
I believe the answer is:
listen
'pay attention to' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for listen that I've seen before include "Make an effort to hear" , "Take heed -- 13 (anag)" , "Give one's attention" , "Pay heed (to advice)" , "Give ear (to)" .)