Benedict Cumberbatch and Martin Freeman return as Sherlock Holmes and Dr. Watson in the acclaimed modern retelling of Arthur Conan Doyle's classic stories. But now our heroes find themselves in 1890s London. Beloved characters Mary Morstan (played by Amanda Abbington), Inspector Lestrade (Rupert Graves) and Mrs. Hudson (Una Stubbs) also turn up at 221b Baker Street.
Sherlock: The Abominable Bride is a 90-minute Sherlock Special.
MASTERPIECE Sherlock: The Abominable Bride, Thursday at 9 p.m. on PBS 6.