Sherlock ran for four series between 2010 and 2017, along with the standalone special The Abominable Bride. Each feature-length episode puts a modern spin on Arthur Conan Doyle’s Sherlock Holmes stories, mixing familiar characters and cases with new mysteries.
Browse the episode guides below for summaries of each season.
Spoiler warning: the individual episode guides discuss major plot points, including endings.
Season One
Sherlock Holmes and John Watson meet, move into 221B Baker Street, and take on their first cases together—from a string of suspicious suicides to coded messages and a dangerous battle of wits with a mysterious adversary.
Season Two
Sherlock and John face increasingly formidable adversaries, including the enigmatic Irene Adler, a terrifying mystery on Dartmoor, and the harrowing return of Moriarty, who is determined to bring Sherlock down.
Season Three
Sherlock returns to London to find that life has moved on without him. As John prepares for a new chapter with Mary Morstan, old friendships are tested and a powerful new adversary emerges.
Season Four
Sherlock, John, and Mary confront cases that have become increasingly personal, forcing them to reckon with more secrets, more loss, and the Holmes family’s very complicated past.
The Abominable Bride *coming soon*
Sherlock and Watson step back into Victorian London for a standalone special involving a mysterious bride who appears to have returned from the dead. Set largely in the world of the original Holmes stories, the episode also connects the events of Seasons Three and Four.