Endless temptation I had that's sensational (5)
I believe the answer is:
lurid
'sensational' is the definition.
('lurid' can be similar in meaning to 'sensational')
'endless temptation i had' is the wordplay.
'endless' means to remove the last letter.
'temptation' becomes 'lure' (lure is a kind of temptation).
'i had' becomes 'id' (I'd).
'lure' with its final letter taken away is 'lur'.
'lur'+'id'='LURID'
'that's' is the link.
(Other definitions for lurid that I've seen before include "Explicit" , "Unpleasantly vivid in colour" , "Vividly shocking" , "Shockingly sensational" , "Fiery - sensational" .)