It’s coffee in bed for Beckett as she was out late investigation an apartment explosion. Castle tries to seduce his partner away from following an early morning lead. She’s powerless against his charms. Well, that’s what he believes. As for the case, the suspect is Archibald Fosse. He blew up his bookie six years ago and his conviction was recently overturned. Fosse was being visited by Diego Jimenez to follow up on an online baseball card deal. He bolts from his apartment when the police show. Ryan and Esposito catch him as he activates a handheld device. Back in his apartment, Beckett senses something under her feet. She thinks she’s just stepped on a bomb.
Castle believes everything is fine. Beckett probably stepped on a loose floorboard. Or it could be a trigger plate. Captain Mahoney of the bomb squad says the latter is true. Beckett is standing on a sensor plate that’s wired to a detonator. One wrong move and the entire building will blow. All non-essential personnel are order to evacuate. This includes Castle. Yeah, that’s not going to happen. Castle is going to be Beckett’s bomb buddy. The only way he’ll leave is if she admits that she had feelings for him when they first met. Surprisingly, Beckett does admit she had one feeling for him back in the day. She couldn’t stand him.
Castle and Beckett recall the early days of their partnership. He was a total playboy and she’s had a dizzying array of hairstyles over the years. There was also banter, lots and lots of banter. Okay, some things never change. The trip down memory lane keeps Beckett’s mind off her dire situation. The only way to disarm the bomb is to punch in a code. There are a hundred thousand possible options. Only Fosse knows the code. His motive appears to be revenge against people who wronged him during his trial. He may also have a vendetta against cops. Fosse’s lawyer says he’s client wants full amnesty before he tells them how to save Beckett.