Disreputable family member goes back to collect heroin after dark (5,5)
I believe the answer is:
black sheep
'disreputable family member' is the definition.
(I've seen this before)
'back to collect heroin after dark' is the wordplay.
I cannot quite understand how this works, but
'heroin' could be 'h' (H is a slang term for heroin) and 'h' is found within the answer.
'dark' could be 'black' (synonyms) and 'black' is found within the answer.
The remaining letters 'seep' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'goes' is the link.
Can you help me to learn more?
(Other definitions for black sheep that I've seen before include "Disgraceful member (of a family)" , "purveyor of wool" , "ostracised family member" , "Disreputable individual" , "Disgraced family member" .)