Castle - Season 4 Link

: The season concludes with the long-awaited payoff in the finale, "Always," where Castle and Beckett finally share their first real kiss and become a couple.

In Season 4 of Castle , a central "piece" of evidence appears in episode 10, "," where Castle and Beckett wake up handcuffed together in a dark room with no memory of how they got there. Castle - Season 4

: Following the Season 3 finale shooting, Beckett spends the early part of the season physically and mentally recovering while keeping a major secret: she remembers Castle's confession of love. : The season concludes with the long-awaited payoff

During the investigation, they recall visiting the morgue to see Lanie, who found a . Castle notices a postal barcode on the back of the paper, which becomes the key piece of evidence used to track where the document was sent from and eventually lead them to the culprits. Key Highlights of Season 4 During the investigation, they recall visiting the morgue