Castle Subtitles English - S04e06

: The killer is revealed to be Detective Smith , the original arresting officer from 20 years ago. Sinclair was murdered because he had been a child witness to the original crime and was beginning to recover those suppressed memories. Thematic and Character Developments

: The episode is rich with references, including Ghostbusters (with Beckett famously saying "I ain't afraid of no ghosts"), The Sopranos , and Night of the Living Dead . Viewing Information and Subtitles Castle subtitles English S04E06

: The investigation reveals that the "haunting" is tied to an unsolved murder from 20 years prior. The team eventually discovers the body of Matt Benton hidden in a secret room; he had been missing for decades while his wife Melanie's death remained a mystery. : The killer is revealed to be Detective