"Castle" becomes a "Boys" show as Beckett is out of the picture and in we have "old friend" Slaughter (Adam Baldwin, as cool as ever). Slaughter needs Castle's help to find the killer of one of his informants, of whose death Slaughter himself is a suspect.
This episode centers on the cool interplay Baldwin and Fillion have from their time together at "Firefly". There had already been another episode in season 4 with Slaughter, so the character doesn't need to be introduced (even if most of the viewers won't remember much of him). Both actors, and also Huertas's Esposito and Dever's Ryan, make for a fun team to be with, and the rhythm never decays throughout the episode. It's fun, it has action, some interesting moments... On the down side, as seems to be regular with this eight season of the show, the mystery is more or less interesting, but the resolution is quite lame. "Castle" was a show fond of last second's twists that would give some information we didn't know about and give us the killer for the episode. But in this season, the twists come, but many times they are about a character that has been on the fringes of the episode for its whole running time. If the viewer is not invested in the suspects, the episode loses quite of its thrill, even if not any of its charm.
