First lady's son revealed going over to bottle bank (4)
I believe the answer is:
abel
'first lady's son' is the definition.
'abel' can be an answer for 'son' (I have seen 'Second son ' mean 'abel' so perhaps 'son' could also mean 'abel'). I'm not certain of the 'first lady's' bit.
'revealed going over to bottle bank' is the wordplay.
'going over' says the letters should be written backwards.
'revealed' indicates a hidden word (I've seen 'reveals' mean this).
'leba' is hidden within 'to bottle bank'.
'leba' written backwards gives 'ABEL'.
Can you help me to learn more?
(Other definitions for abel that I've seen before include "One of the first children" , "Cain's 11" , "Bale out with murder victim" , "First person killed" , "Cain slew him" .)