Castle is completely on edge. His daughter was abducted in “Target.” He wants answers as to why the kidnappers have taken Alexis and her friend to Paris. The FBI says it’ll take time before they can take action. That’s not gonna work. Castle knows the girls need help now. The kidnappers call to set up a ransom demand. Sara’s father will pay the money. He insists that Alexis be part of the deal. Street surveillance cameras show a family member in Paris making the exchange. The money is delivered and, after a few tense moments, so is Sara. Castle desperately watches the screen. There’s no sign of Alexis.

Castle heads home to update his mother. At least, that’s what he says he’s going to do. In reality, he jets off to Paris to get back his daughter—alone. Beckett decides she shouldn’t go after him. She knows Castle is acting like a father, but she needs to act like a cop. She’ll work the case from home. Beckett questions Roger Hanson’s girlfriend. She kicks out her chair to show how serious she is about getting answers. The girlfriend leads them to Hanson’s apartment. The place has been tossed. Fortunately, a computer was left behind.

Castle contacts an old Derrick Storm adviser who puts him in touch with a man who works outside the boundaries of the law. His name is Jacque Henri. This guy brings Castle to a blind sound man who determines where Alexis was held by analyzing the Skype message. Henri realizes the place is bugged. He advises the kidnappers to call him or else he’ll come after them. RING! The bad guys agree to let Alexis go. A meeting is set up in a forest. Back in New York, Hanson’s computer hard drive shows surveillance shots of Alexis. Beckett realizes she wasn’t at the wrong place at the wrong time. She was the target.

Henri drives to the exchange site. Castle is beside him with $3 million in ransom money. His phone rings. It’s Beckett. Castle doesn’t answer, as the kidnappers have arrived. He gets a bad feeling in his gut. Something isn’t right. Henri sticks a gun in the back of Castle’s head. He’s selling him out. Henri says he never would have taken the job if he knew who Alexis truly was. This completely confuses Castle as he’s tossed to his knees. A masked gunman takes aim. Castle is going to be executed.