Fascinate, captivate (7)
I believe the answer is:
enthral
This clue is a double definition.
'fascinate' is the first definition.
(I've seen this before)
'captivate' is the second definition.
(I've seen this in another clue)
(Other definitions for enthral that I've seen before include "absorb" , "hypnotise" , "Delight - transport" , "Hold spellbound" , "rivet" .)