He robbed the mayor's house in germany including with a ladder and stole some money from that so he knows how to get into places with ladders. He also came into this country illegally by breaking his way out of jail boarding a ship heading to the US them lied his way through the border and came into the U.S.A. He also mugged a woman with a baby and they were by therself.
Basicly all the evidence pointed to Hautman. Either he was frammed and the people that killed that baby frammed hauptman or Hauptman did most of the crime and left evedence or he was just in the wrong place at the wrong time becasue he used some of the ransom money at a gas station and the clerk read the liscence palte and it lead to 14,000 of the ransom money.
The ladder was proven to be wood from Bruno Richard Hauptmans adic. They also realized that he was german and the guy that came and got the ransom money the guy could prove that he was