||Television's most unlikely crime-fighting team is back and their relationship is stronger than ever in ABC's Castle: The Complete Fourth Season. Prepare for a season full of suspense as Castle works to identify Beckett's shooter while Beckett struggles with the aftermath of her near-death encounter. All the while, the duo tackles a new batch of New York City's most interesting cases. Castle gets spooked while investigating the death of a ghost hunter, a sexy insurance investigator helps out when a valuable sculpture vanishes and Castle is taken hostage during a bank robbery. Meanwhile, the Triple X Killer returns to New York and the team must race against the clock when Castle and Beckett go missing. Relive every misadventure with your favorite partners-in-crime with this 6-disc collection -- complete with all 22 memorable episodes, plus exclusive bonus features only available on DVD. It's a must-have for every Castle fan!