it 's ) a clever thriller with enough unexpected twists to keep our interest . 
(ROOT (S (NP (NP (PRP it))) (VP (VBZ 's) (-RRB- -RRB-) (NP (NP (DT a) (JJ clever) (NN thriller)) (PP (IN with) (NP (NP (JJ enough) (JJ unexpected) (NNS twists)) (SBAR (S (VP (TO to) (VP (VB keep) (NP (PRP$ our) (NN interest)))))))))) (. .)))
(ROOT (S (NP (NP (PRP ))) (VP (VBZ ) (-RRB- ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NP (JJ ) (JJ ) (NNS )) (SBAR (S (VP (TO ) (VP (VB ) (NP (PRP$ ) (NN )))))))))) (. )))