Criminal discovered in last chapter. 
( Criminal ( ( discovered ( in ( last chapter ) ) ) . ) )
(ROOT (S (NP (NNP Criminal)) (VP (VBD discovered) (PP (IN in) (NP (JJ last) (NN chapter)))) (. .)))
Criminal discovered in the last part.
( Criminal ( ( discovered ( in ( the ( last part ) ) ) ) . ) )
(ROOT (S (NP (NNP Criminal)) (VP (VBD discovered) (PP (IN in) (NP (DT the) (JJ last) (NN part)))) (. .)))