Devil in Paris at a nightclub (5)
I believe the answer is:
satan
'devil' is the definition.
(I know that Satan is a devil)
'in paris at a nightclub' is the wordplay.
'in' says the answer is hidden in the clue.
'SATAN' is hidden in the letters of 'paris at a nightclub'.
(Other definitions for satan that I've seen before include "Old Nick, Lucifer or Beelzebub" , "Diabolical figure" , "Fallen archangel" , "Fiend" , "Prince of Darkness" .)