A culprit is arrested in the Jack the Ripper case which was solved by the Moriartys. Suspecting a frame-up by Arterton, Lestrade asks Sherlock for help in finding evidence that would prove it. Meanwhile, Paterson works to sneak Bonde inside the station.
but are you certain you want to search
the Yard for a hidden ledger?
Scotland Yards’
schwarzes Kassenbuch zu suchen …
pero buscar un libro mayor
secreto en Scotland Yard…
tu es sûr de vouloir chercher
ce livre de comptes secret ?
mas tem certeza de que quer procurar na
polícia por um Livro Diário secreto?
но залезть в архивы Ярда...