Eurus Holmes, , also known as Elizabeth[1], the Woman on the Bus, and Faith Smith, is a character on the BBC TV series, Sherlock and is the fourth series' main antagonist. She is the sister of Sherlock and Mycroft Holmes and daughter of Mr. and Mrs. Holmes.

Eurus is based on the abandoned concept of Sherrinford Holmes from the Sherlock Holmes novels by Arthur Conan Doyle.

Biography Edit

Pre-series Edit

Eurus Holmes is the youngest child and only daughter of Mr. and Mrs. Holmes and has two older brothers: Mycroft and Sherlock. She is eight years younger than her brother, Mycroft, and a year younger than Sherlock. As a child, Eurus grows jealous of her brother's friendship with Victor Trevor and later abducts him and leaves Victor to die in a wishing Well (The Final Problem")

Sometime later, she gloats to her brother that she drowned Redbeard and later burnt down Holmes Mansion. Because of the danger she had, Rudolph Holmes gets his niece locked in Sherrinford with Mycroft only knowing the secret. In order to spare his parents' feelings, Mycroft lied to his parents and said that she was dead. After Rudy died, Mycroft took it upon himself to take over the duty to watching over his sister.

Eurus also manages to take over Sherrinford and being able to come and go as she pleases without her older brother Mycroft's knowledge. 

Many years later, Eurus asks for an unspervised conversation with James Moriarity as a christmas present. Since the beginning, the two plan to bring down about Sherlock's demise. 

Series 3 Edit

Mycroft claims he holds no brother sentimental towards Sherlock, and claims they know what happened "to the other one" (His Last Vow). Later, Eurus sends the message with one of her recordings of James Moriarity in order to send a message to her brother.

Series 4 Edit

One day on the bus, John meets a woman named Elizabeth. John later ends up betraying his wife and begins cheating on Mary by sending the girl on the bus texting (which was something he would later regret). Eurus later tricks her brother Sherlock in pretending on being Faith Smith and goes to him for help. She later leaves him the next day. Sometime later she poses as John Watson's therapist in order to manipulate both men. Eurus reveals her identity to John, pointing out that she was the woman John met on the bus and the woman who posed as Faith Smith. Eurus takes out a gun and pulls the trigger and shoots John with a non-lethal tranquilizer dart and knocks him out and returns back to Sherrinford. ("The Lying Detective", "The Final Problem")

Family Edit

  • Mr. Holmes (father)
  • Mrs. Holmes (mother)
  • Sherlock Holmes (brother)
  • Mycroft Holmes (brother)
  • Rudy Holmes (paternal uncle)

Status: Alive

Trivia Edit

Etymology Edit

Character Notes Edit

  • Eurus is eight years Mycroft's junior and one year by Sherlock. 
  • She once manipulated one of her nurses to have sex with her. However, Eurus wasn't sure if her nurse was a male or a female.
  • Mycroft warns Sherlock that the east wind is coming during his mind palace sequence, an early reference to Eurus. ("His Last Vow")\

Production Notes Edit

  • The existence of Eurus was planned since the very beginning of the entire series, but wasn't introduced until "The Six Thatchers." [2]

Other Notes Edit

  • In another story, Enola Holmes is the notoriously younger sister of Sherlock and Mycroft Holmes in the non-canon series.

Appearances Edit


  1. "The Six Thatchers" Credits