thrills when it should be most in the mind of the killer 
(ROOT (S (NP (NNS thrills)) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (MD should) (VP (VB be) (PP (ADVP (JJS most)) (IN in) (NP (NP (DT the) (NN mind)) (PP (IN of) (NP (DT the) (NN killer)))))))))))
(ROOT (S (NP (NNS )) (SBAR (WHADVP (WRB )) (S (NP (PRP )) (VP (MD ) (VP (VB ) (PP (ADVP (JJS )) (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN )))))))))))