in an impossible spot because his character 's deceptions ultimately undo him and the believability of the entire scenario 
(ROOT (S (PP (IN in) (NP (DT an) (JJ impossible) (NN spot))) (SBAR (IN because) (S (NP (NP (PRP$ his) (NN character) (POS 's)) (NNS deceptions)) (ADVP (RB ultimately)) (VP (VBP undo) (NP (NP (PRP him)) (CC and) (NP (NP (DT the) (NN believability)) (PP (IN of) (NP (DT the) (JJ entire) (NN scenario))))))))))
(ROOT (S (PP (IN ) (NP (DT ) (JJ ) (NN ))) (SBAR (IN ) (S (NP (NP (PRP$ ) (NN ) (POS )) (NNS )) (ADVP (RB )) (VP (VBP ) (NP (NP (PRP )) (CC ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))))))