a fascinating , dark thriller that keeps you 
(ROOT (NP (NP (DT a) (JJ fascinating) (, ,) (JJ dark) (NN thriller)) (SBAR (WHNP (WDT that)) (S (VP (VBZ keeps) (NP (PRP you)))))))
(ROOT (NP (NP (DT ) (JJ ) (, ) (JJ ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (PRP )))))))