The shifter tried to figure out where he had gone wrong. Maybe he should have just found a really good place to hide instead of killing people and taking them over. Maybe when he had first gone into the vault he should have taken that young hunter hostage. He had passed within an inch of him. Maybe he shouldn't have tried to psych them out by pretending he was a dead teller to get them to kill the actual teller and think they had succeeded. Maybe he shouldn't have turned to a life of crime in the first place. Nah.