Enola Holmes: 10 Things From The Books Not Included In The Film

There's a lot about London that horrifies Enola, the most significant of which is the poverty she observes all around her, leading to unfathomable misery and disease and even death. This is why, as one of her many personas, Enola takes on the role of one "Sister of the Streets", a religious figure wandering the streets at night, giving alms to beggars who give her the moniker.

Despite being loved by those she provided for, Victorian London in the evening was still a very dangerous place, which is why Enola often hid a knife in her corset.

At one point, Enola is attacked - garroted - by a strange man, though the high collar of her clothing kept her from being killed. This act of violence shakes the 14-year old to the core, but she doesn't stop chasing down answers, only reconsidering her safety and ability to fight back - the martial arts training in the film something she doesn't actually have in the books.

Enola's deep concern and empathy for the downtrodden is only briefly touched upon in the film, though it's a major driving force of her character, especially in contrast with Sherlock.