. "The Four Signatures is the first episode of Sherlock Hound. It was first broadcast on 6 November, 1984."@en . "1984-11-06"^^ . . "The Four Signatures"@en . "The Four Signatures"@en . "N/A"@en . . . "1"^^ . . "1"^^ . "The Four Signatures is the first episode of Sherlock Hound. It was first broadcast on 6 November, 1984."@en .