'Sherlock' Season 3 Finale Trailer: 'His Last Vow'

The return of BBC's Sherlock after a two-year hiatus has re-united Sherlock Holmes (Benedict Cumberbatch) with his best friend and (former) assistant Dr. John Watson (Martin Freeman), and after the exposition-heavy Season 3 premiere 'The Empty Hearse,' the game is back on.

After two years spent taking apart the evil genius Moriarty's (Andrew Scott) criminal empire, Sherlock's brother Mycroft (Mark Gatiss) needs him back in London to help prevent a terrorist threat - everyone's favorite high-functioning sociopath must also find a way to re-insert himself into Watson's life.

Episode 2, 'The Sign of Three,' will find Sherlock chasing a murderer as Watson is about to marry his fiancée Mary Morstan (Amanda Abbington), which sounds like an opportunity to balance the plot's central mystery with the ongoing character dynamics (something of a problem in the season premiere).

Now (a little sadly) we're already looking ahead to Sherlock's Season 3 finale 'His Last Vow,' which pits our sleuth against blackmailer Charles Augustus Magnussen (Lars Mikkelsen). Watch the finale's trailer above, and read the episode's synopsis here:

A case of stolen letters leads Sherlock Holmes into a long conflict with Charles Augustus Magnussen, the Napoleon of blackmail, and the one man he truly hates. But how do you tackle a foe who knows the personal weakness of every person of importance in the Western world?

Benedict Cumberbatch returns as Sherlock in season 3 teaser

While the finale's title echoes the Arthur Conan Doyle short story "His Last Bow" - which sees Holmes and Watson catching spies on the eve of World War I - this look at the finale exposes a side of Sherlock we haven't really seen. His previous nemeses were challenges for Sherlock on many different levels - intellectually, physically and even emotionally when the very few people close to Sherlock have their lives threatened by Jim Moriarty toward the end of the Season 2 finale, 'The Reichenbach Fall.'

Only Moriarty has come close to inspiring the level of hatred Sherlock appears to have for Magnussen, and even then the two enemies had a certain level of mutual respect for each other. What kind of master blackmailer must Magnussen be to evidently have even Mycroft in his pocket? Expect much of this to remain a mystery until Season 3's penultimate episode airs.


Sherlock Season 3 concludes with 'His Last Vow', which airs on BBC One on Sunday, January 12th.

US viewers can watch the Season 3 premiere ‘The Empty Hearse’ on Sunday, January 19th on PBS.

Source: BBC

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