Something about the tone of Sherlock's third season seems off compared to the earlier seasons, as though the writer's weren't sure what mood they were trying to set. The characterisations seem to veer off course from what we've seen so far, almost resembling fan fiction at some points, while the plots are getting more and more outlandish. The writers have expanded their world beyond Baker St and into global espionage, and the show suffers for it, as it becomes less and less believable, and even the backbone of the entire series, the friendship between Sherlock and John, can't anchor the plot in reality anymore. The sense of disconnect throughout the three episodes make Season 3 feel surreal - like it didn't really happen, and at any time we would find out it was all a dream. But we didn't. Despite the weakness in the writing, the cast still turn out stellar performances (as usual), and the action and mystery still provide a fun ride for the audience.