What happens after Sherlock Holmes’ death? A new CBS series is looking to expand on the mysterious universe, diving into the next chapter that has intrigued fans for more than a century.

Set six months after the death of Sherlock Holmes, the show follows Dr. John Watson, who has returned to practicing medicine at a clinic for rare disorders. But Watson’s past isn’t done with him, as Moriarty, Holmes’ nemesis, makes a return.

Morris Chestnut, known for his roles in “The Best Man,” “Boyz n the Hood” and “The Best Man Holiday,” stars as Watson. He is also the series’ executive producer.

Here’s what to know about the new Sherlock Holmes-inspired series, including when and how to watch.

When does ‘Watson’ premiere?

The first episode of “Watson” premieres on CBS at around 10 p.m. ET on Sunday, Jan. 26, following the American Football Conference championship.

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How to watch ‘Watson’

Viewers can tune in to the first episode of “Watson” on CBS at around 10 p.m. ET on Sunday, Jan. 26.

For viewers without cable, “Watson” can be streamed live with a Paramount+ with Showtime plan or the day after the premiere with a Paramount+ Essential subscription.

The Paramount+ with Showtime plan costs $12.99 per month or $119.99 a year. The Paramount+ Essential subscription, the basic Paramount+ plan, is $7.99 monthly or $59.99 a year.

Watch the ‘Watson’ trailer

Who makes up the cast of ‘Watson’?

• Morris Chestnut as Dr. John Watson
• Eve Harlow as Dr. Ingrid Derian
• Tommy O’Brien as Zach
• Inga Schlingmann as Dr. Sasha Lubbock
• Rochelle Aytes as Mary Morstan
• Peter Mark Kendall as Stephens Croft
• Ritchie Coster as Shinwell Johnson
• Bethany Brown
• Danny Mac
• Shannon Berry
• Jean Zarzour
• Seham Ahmed
• Anita Alfke
• Alessandro Pekin

Do you need to watch ‘Elementary’ to watch ‘Watson’?

No, viewers do not need to watch “Elementary” before watching “Watson.” Though some Sherlock fans are calling the new release an “Elementary” sequel.

The only official correlations between “Watson” and CBS’ 2012 drama series “Elementary” is that the two shows are inspired by Sir Arthur Conan Doyle’s “Sherlock Holmes” and writer Craig Sweeny.

Sweeny wrote several episodes of “Elementary” and is the led writer behind “Watson.”

Over the course of seven seasons, “Elementary” takes a different approach to the classic Sherlock story, replacing Dr. John Watson with Dr. Joan Watson, played by Lucy Liu − the first female version of Holmes’ beloved sidekick.

Entertainment journalist Jack Ori wrote for Screen Rant that “Watson” is “the closest thing to a spiritual successor to ‘Elementary.'”

Ori said that “Elementary” humanized the classic Sherlock characters, which he hopes will be the case in “Watson.”

Greta Cross is a national trending reporter at USA TODAY. Follow her on X and Instagram @gretalcross. Story idea? Email her at [email protected].