Episode 506 of the supernatural soap opera Dark Shadows was directed by Lela Swift and written by Gordon Russell. It was produced by Robert Costello and first aired on June 3rd, 1968. In this episode, the ghost of Reverend Trask takes revenge against Barnabas Collins by having him immured behind a brick wall in the basement of the Old House. He makes him the defendant of a mock trial where the witnesses are the ghosts of those Barnabas has slain in the past.

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