It seems that detective Marcus Bell (Jon Michael Hill) is going to play an important role in Sherlock Holmes (Jonny Lee Miller) and Joan Watson’s (Lucy Liu) new mission of assisting ex-convict Shinwell Johnson (Nelson Ellis) in his transition from prison life to the outside world.

In an interview with Entertainment Weekly for the upcoming Season 5 of “Elementary,” series creator Rob Doherty revealed that Marcus is “going to take a pretty keen interest in Sherlock and Joan’s endorsement of Shinwell” — which shouldn’t come as a surprise since the NYPD detective has an ex-convict brother.

“We haven’t explored that in awhile, so we don’t know how well that’s gone or how poorly it’s gone,” Doherty said of Marcus’ relationship with his ex-con sibling Andre Bell (Malcolm Goodwin). “But [Marcus] has experience with this kind of person and this kind of quest. He will have some pretty strong opinions about how Sherlock and Joan are approaching it.”

Andre was introduced in Season 1, episode 16, titled “Details.” In the episode, Marcus barely survives an attack while driving home one night. A newly released felon is the first suspect of the shooting, but when he is killed, suspicion moves to Bell’s brother, who, unlike Marcus, has lived life on the wrong side of the law. At the end of the episode, it was revealed that Andre is innocent, and the real attacker is none other than Officer Paula Reyes (Paula Garcés).

As previously reported, Sherlock feels that Joan is no longer as enthusiastic about her detective work as she’s been in the past, so he encourages her to help her former patient Shinwell in his reentry to society.

“Elementary” Season 5 premieres Sunday, Oct. 2, at 10 p.m. on CBS. Check out the synopsis for episode 1, titled “Folie a Deux,” below:

“When a serial bomber becomes active again after being dormant for six years, Watson seeks help from Shinwell Johnson, a former patient whose life she saved when she was a surgeon. Also, Sherlock Holmes senses Watson is unhappy and questions whether she is still fulfilled by her detective career.”