Some suspect recurrent apparition (7)
I believe the answer is:
spectre
'apparition' is the definition.
(spectre is a kind of apparition)
'some suspect recurrent' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'SPECTRE' is hidden in the letters of 'suspect recurrent'.
(Other definitions for spectre that I've seen before include "Enemy organisation for James Bond; ghost" , "Sceptre (anag.)" , "Narrow ravine" , "Ghost, phantom, apparition" , "'Phantom, shade (7)'" .)