The Irregulars

E1. Chapter One: An Unkindness in London

As Jessie's nightmares grow worse, Bea accepts Dr. Whatson's job offer to investigate four kidnapped babies - and receives some unexpectedly posh help.

★ 4.6

E2. Chapter Two: The Ghosts of 221B

Broke and in trouble, Bea reluctantly partners with Jessie to find out who's stealing children's teeth. Spike spies on Watson and Sherlock Holmes.

★ 3.5

E3. Chapter Three: Ipsissimus

A gruesome murder sends Bea and her crew undercover at a country estate to determine whether the killer is part of a secret paranormal society.

★ 3.9

E4. Chapter Four: Both the Needle and the Knife

Jessie comes face to face with Inspector Lestrade at a crime scene, Bea plays cat and mouse with Watson, and Leo feels torn over his life at the palace.

★ 3.0

E5. Chapter Five: Students of the Unhallowed Arts

Bea discovers more about her mother's long-ago connection to Holmes and Watson, while Billy contemplates revenge after a brutal reminder of his past.

★ 2.5

E6. Chapter Six: Hieracium Snowdoniense

Bea suspects a spate of stolen body parts links to an old case, Jessie approaches Sherlock about her nightmares. Leo makes a stand for his future.

★ 3.3