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.
He will be of great use to us
henceforth with our plans.
Wir werden uns das in Zukunft
Él nos será de gran ayuda
de ahora en adelante.
Il nous sera d’une grande aide
Ele será de grande utilidade
para os nossos planos.
Он сыграет огромную роль