They decide to put it in a safety deposit box. Jean reveals the key is for Brian's safety deposit box in a bank. When they inspect the safety deposit box, the money is gone. He reasoned this because Bernice did not reveal the contents of the safe deposit box. Some of them sold, some of them are still in a safety deposit box. He gives the key to the safety deposit box to his son before leaving. The automobile key will not work to open the safety deposit box and vice versa. The seed vault functions like a safe deposit box in a bank. They travel to Puerto Rico and access Butch's safe deposit box.