Detective Vincent Riley (Reid Scott) is finally getting a new partner seven episodes into Law & Order Season 25. He’s been without one — working with Lieutenant Jessica Brady (Maura Tierney) and Detective Violet Yee (Connie Shi) — since Mehcad Brooks‘ (Detective Jalen Shaw) exit between seasons. But in September, the day before the premiere, it was announced that David Ajala would be joining the cast as a new series regular, playing a detective. Now, the promo for the Thursday, November 13, episode reveals his debut.

The promo shows Riley and Ajala’s detective approaching a crime scene. Riley asks him if it’s his first homicide. When Ajala’s character sees the victim, he remarks that “he’s just a kid.” He also seems to be bothered by the events that occur during the investigation.

The video also shows Dylan Baker back — he’s appeared in seven episodes, mostly as Defense Attorney Sanford Rems, whom he’s once again playing here (we assume) — in court facing off with ADA Nolan Price (Hugh Dancy). “It was self-defense,” Rems insists. Something doesn’t make sense to Price. Watch the full promo above for more.

In this next episode, “Guardian,” when a high school sports star is murdered, the police find several suspects trying to make money off the victim’s talent.

Riley’s getting a new partner right after an episode that ended with his brother Matt’s (guest star Ryan Eggold) life hanging in the balance. Matt was a witness in a murder trial and was stabbed before he was set to testify. He still did so from his hospital bed, but due to a bacterial infection, the doctors had to put him in a medically induced coma. It wasn’t looking good at the end of the episode.