'Sherlock' Season 4 Spoilers, Air Date and Updates: New Trailer for Next Season Out; Show Will be Grim in 2017

By Nens Mitchell , Updated Oct 28, 2016 11:35 PM EDT

A newly released trailer for "Sherlock" Season 4 takes fans of the TV series to what looks like a grim instalment coming next year. The detective show will offer more exciting storylines to its viewers.

The more than 1 minute teaser showed that there will be a lot more threats waiting for Watson and Holmes. A dark storyline is also expected from the footage cuts of the trailers showing action-packed scenes.

A villain coming

A catching dialogue on the footage echoed a voice that said "Something's coming. Maybe it's Moriarty. Maybe it's not." It is believed that this could refer to a new villain coming to the show. Others think this is in reference to Culverton Smith's threat.

Holmes, on the other hand, was shown trying to convince the others that he has a rare disease which is deadly. This is in hopes of having Smith that he was the one behind the murder of the former's nephew.

Is this the final season?

Many are convinced that the show will already give its best since it will be "Sherlock's" fourth and final season. Benedict Cumberbatch has earlier hinted about the end of the series saying it feels like "the end of an era" for him.

Episode details

The fourth season of "Sherlock" will air on BBC One (UK) and PBS (US) beginning January 1. When it becomes available, fans will only be treated to three episodes so fans should savor every scene on the TV series.

Season 4's first episode is named "The Six Thatchers" which is said to be in reference to a former prime minister in the United Kingdom. The second episode's title was also released to the public and will take the name "The Lying Detective." Are you excited for "Sherlock" Season 4?

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