all the more disquieting for its relatively gore-free allusions to the serial murders , 
(ROOT (S (ADJP (ADVP (PDT all) (DT the) (RBR more)) (JJ disquieting)) (PP (IN for) (NP (NP (PRP$ its) (ADJP (RB relatively) (JJ gore) (HYPH -) (JJ free)) (NNS allusions)) (PP (IN to) (NP (DT the) (JJ serial) (NNS murders))))) (, ,)))
(ROOT (S (ADJP (ADVP (PDT ) (DT ) (RBR )) (JJ )) (PP (IN ) (NP (NP (PRP$ ) (ADJP (RB ) (JJ ) (HYPH ) (JJ )) (NNS )) (PP (IN ) (NP (DT ) (JJ ) (NNS ))))) (, )))