In “Pandora,” Castle and Beckett are driven into the water by an unseen assailant. Their car plunges into the murky depths below. Beckett’s gun has fallen to the floor. Castle dives into the water that’s rapidly filling the car. He needs to find the gun to break the window and save his partner who is held captive by jammed seatbelt. Castle has been under far too long. Beckett struggles until she’s completely submerged. Eventually, her grip on the steering wheel is lost as her hands go limp.
FLASH! FLASH! Shots are fired. Castle got the gun. He and Beckett are safe, but they still can’t tell the rest of their team the classified details behind Dr. Martin Blakely’s murder at the docks. CIA operative Sophia Turner brings them back to the secret bunker to inform them that they are no longer part of the investigation. She chastises Castle with a personal attack that has Beckett realizing that these two slept together in the past. This new info has our favorite homicide cop feeling conflicted, as evidenced by the way she steps up to the wrong desk. But that’s not going to stop Beckett from going after a killer. Castle, too.
The CIA swipes Blakely’s body. The ensuing conversation in the morgue has a seemingly jealous Beckett bringing up the fact that Castle slept with Sophia. Unfortunately for everyone, Alexis overhears the whole thing. Castle deflects her queries about Sophia, who sneaks into his place to inform him that she wants him to continue with the investigation. The dressing down she gave him at headquarters was just a ruse for her colleagues. She even provides him with a lead because she knows Castle won’t ever stop until he knows how the story ends.
Castle shows Beckett bank account info on Blakely that Sophia provided. He may have received some big money payoffs for consulting on Pandora. Esposito and Ryan track down a chess playing pal of Blakely’s who grilled him on economic theories. This leads Castle and Beckett to an apartment with a side room. Inside is a spider web of newspaper clippings and complex equations strung from one wall to another. The message that’s to be taken away from all the various nexus points is that their domino effect will lead to World War III.