Milverton blackmails Mary, exploiting her dalliance in antigovernment activities as a student. Sherlock decides to sneak into Milverton's estate to steal his evidence, but even that act was anticipated. Sherlock finds that he is not the only trespasser.
That being... to have the Lord of Crime
be arrested by the detective.
Und zwar,
Eso es… hacer que el Amo del Crimen
sea arrestado por el detective.
Celui de la capture du prince du crime
par le détective.
А именно...