How Will ‘Watson’ End? Series Finale Details Revealed
What To Know
- Watson will end after two seasons, with its series finale airing on Sunday, May 3 on CBS.
- The network has revealed details about the last episode.
Sadly, Watson will be ending after two seasons this May. And what makes that even more unfortunate is the new information that has been released about the series finale — it sounds like this could be setting up what would have been a great Season 3!
On Thursday, April 9, CBS released the official descriptions for its finales, and Watson‘s was one of them. In the Sunday, May 3, episode, titled “The Cobalt Fissure,” the network teases, “A seemingly random murder outside of UHOP sets the stage for the arrival of someone from Watson [Morris Chestnut] and Sherlock Holmes’ [Robert Carlyle] past.”
If the words “cobalt fissure” are familiar to you, they should be: They came up in relation to Watson and Sherlock’s past adventures. However, as recent episodes have revealed, Sherlock isn’t really alive — or, well, the Sherlock that Watson has been seeing isn’t, since, after all, who knows what could be revealed still. But for now at least, the doctor has been hallucinating the sleuth, and he attributes it to the traumatic brain injury he sustained following Sherlock over the waterfall and cutting back on his meds.
But who could this person from their shared past be who pops up in the finale? Will it be a name familiar to fans of Sir Arthur Conan Doyle’s work? When it comes to seeing Sherlock Holmes characters from that this season, executive producer Craig Sweeny seemed to rule that out when speaking with TV Insider.
“I think we’re pretty full. We have this gallery where we’re trying to fight to get everybody in. I wouldn’t say we’re going to drop an arc with Henry Baskerville,” he said. “It’s nice to have those characters out there and to be able to think about them, but we’re sort of playing in the sandboxing with the characters that we have.”
But that was also in December 2025, so we’ll have to wait and see just what the finale holds. Share your predictions in the comments section below.
Watson, Series Finale, Sunday, May 3, 10/9c, CBS












