Castle slips Beckett a note about the explosives. The bus is stuck in traffic. There’s no way it’ll make it to the bank before the deadline. Trapper John promises he’s going to kill Castle if the bus isn’t there in one minute. Beckett assures this bad TV doc that if he pulls the trigger she’ll personally walk in there to put a bullet through his skull. Just like that, Beckett has more time. Turns out she’s a pretty good negotiator after all.
Even though they are on opposites sides of the bank doors, Castle and Beckett are completely in tune with their deductions. Like we said earlier, this is more than just a bank heist. The hostages are bound by the hands as the robbers prepare for their next move. Outside, Esposito calls Beckett to say that Agnes Gideon’s only living relative is a former son-in-law named Ron Brandt. Then…
BOOM! An explosion rocks the inside of the bank. A look of sheer horror covers Beckett’s face as she steps up to see the tragedy. The police storm inside to find all the hostages alive and well in the vault area. Beckett is relieved to see that Castle is safe, too. Outside, a worried Alexis has been trying to get her long distance boyfriend, Ashley, to comfort her on the phone. He was just too busy, so she was out there all alone. Not anymore. Alexis is overjoyed as Castle and Martha exit the bank and enter her emotional embrace.
An assortment of body parts lead the police to believe the robbers all died in the explosion. Castle doesn’t buy it. These guys were too good. When Beckett sees a picture of Agnes Gideon’s son-in-law, Ron Brandt, she realizes he’s the hostage who had the seizure. The guy used his military contacts to orchestrate the entire operation. Then he blew the explosives early to kill off all the mercenaries he hired. One big question remains. What was in that safe deposit box?