Watson and the fellows spring back into action when Mary's mother accidentally poisons herself while suffering from a rare form of dementia that is progressing with impossible speed. Meanwhile, Sherlock Holmes resurfaces after being presumed dead.
s02e01 - A Son in the Oven
s02e02 - Back from the Dead
s02e03 - Expletive Deleted
s02e04 - Happy When it Rains
s02e05 - Lucky
s02e06 - Buying Time
s02e07 - Giant Steps
s02e08 - Livvy Sees the Doctor
s02e09 - Shannon Says Bex Loves Micah
s02e10 - Never Been CRISPR'd
s02e11 - The Tunnel Under the Elms
s02e12 - A Family Meal
s02e13 - For a Limited Time Only
s02e14 - Wrongful Life
s02e15 - A Third Act Surprise
s02e16 - Respect the Process, Respect the Quirks
s02e17 - Unsolved Mysteries
s02e18 - Sic Semper Tyrannis
s02e19 - The Rule of Three
s02e20 - The Cobalt Fissure
A year after the passing of his friend and partner Sherlock Holmes at the hands of Moriarty, Dr. John Watson resumes his medical career as the head of a clinic dedicated to treating rare disorders. However, he soon finds that his old life is not done with him yet.