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.
you're prone to clenching
your back molars.
eres propenso a apretar
los molares posteriores.
tu serres les dents du fond.
tende a apertar os dentes de trás?
ты по привычке стискиваешь зубы.