The IrregularsSeason 12021 · 8 episodesEpisodes1Chapter One: An Unkindness in LondonAs Jessie's nightmares grow worse, Bea accepts Dr. Whatson's job offer to investigate four kidnapped babies - and receives some unexpectedly posh help.2Chapter Two: The Ghosts of 221BBroke and in trouble, Bea reluctantly partners with Jessie to find out who's stealing children's teeth. Spike spies on Watson and Sherlock Holmes.3Chapter Three: IpsissimusA gruesome murder sends Bea and her crew undercover at a country estate to determine whether the killer is part of a secret paranormal society.4Chapter Four: Both the Needle and the KnifeJessie 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.5Chapter Five: Students of the Unhallowed ArtsBea discovers more about her mother's long-ago connection to Holmes and Watson, while Billy contemplates revenge after a brutal reminder of his past.6Chapter Six: Hieracium SnowdonienseBea 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.7Chapter Seven: The Ecstasy of DeathAfter demanding the truth from Waton, Bea joins a plan to catch the Linen Man. Jessie fights her fears. Spike scrambles to keep his friends together.8Chapter Eight: The Ecstasy of LifeAs London descends into chaos, Bea and her crew head underground, where together they face untold horror in a dangerous quest to locate the rip.