Jonny Lee Miller as Sherlock, Lucy Liu as Joan
“Elementary” Season 6, starring Jonny Lee Miller as Sherlock Holmes and Lucy Liu as Joan Watson, will premiere in the last day of April. CBS

Sherlock Holmes and Joan Watson will be back solving crimes in the spring.

CBS announced on Thursday that Season 6 of “Elementary” will premiere on Monday, April 30 at 10 p.m. EDT. The procedural detective drama will take over “Scorpion’s” time slot following its Season 4 finale on April 23.

Season 5 of “Elementary” ended with the revelation that Sherlock (Jonny Lee Miller) was hallucinating conversations with his dead mother. The private investigator was then taken in for a brain scan, while his partner Joan (Lucy Liu) discovered the destruction he caused in the Brownstone during one of his recent visions.

While the result of Sherlock’s head MRI remains to be seen, series creator Rob Doherty told Entertainment Weekly last June that the detective’s prognosis will affect him on many fronts in the upcoming season.

“It’s going to create some problems, both personal and professional,” Doherty teased. “For starters, Sherlock made a mistake when he decided to keep his condition from Joan. He’ll have a lot to explain and a lot to make up for. … And, of course, there will be an impact on his work. Sherlock is accustomed to being the finest detective in New York, if not on the planet. But the work won’t come as easily to him when the new season begins, at least not at first.”

Doherty added that Sherlock’s prognosis will also affect how he deals with his sobriety. “He’ll also find his sobriety regimen ‘competing’ with a regimen designed to address his prognosis,” Doherty said. “There will be times he’ll question whether he can tackle one problem without succumbing to the other.”

As for what’s in store for Joan next season, Doherty revealed to TVLine last October that the former surgeon will lose someone who was very close to her once upon a time. “Joan will learn that this person made certain assessments regarding the decisions she has made as a professional,” Doherty teased. “It’s going to give her cause to look at choices she’s made and choices that she has right in front of her: Might she be a more complete person if she weren’t in a partnership with Sherlock Holmes?”

CBS initially ordered 13 episodes for Season 6 of the series. But last November, the network ordered eight additional episodes of the crime drama, bringing its Season 6 total to 21.