Castle season 6, episode 9, “Desciple,” will be airing tonight on ABC, and someone has their eyes set on members of the 12th precinct when a victim who looks just like Lanie appears on her slab.

In the ninth episode of the sixth season, Castle and Becket investigate a case of doppelgängers as their victim looks just like Lanie, and they have to figure out who did it and why before the killer targets more people from the 12th precinct. The synopsis reads:

Castle and Beckett arrive at a crime scene to discover that the female victim bears a shocking resemblance to Medical Examiner Lanie Parish. As the team tries to make sense of this mystery, they realize the killer may be targeting detectives of the 12th Precinct. Annie Wersching (“24”) guest stars as Dr. Kelly Nieman, an exclusive Manhattan cosmetic surgeon who draws Castle and Beckett’s interest because of her connection to the victim, on “Castle,” MONDAY, NOVEMBER 18

Check out the preview for the episode that was aired after last week’s episode:

There’s also a very interesting clip where Castle and Beckett show up to the crime scene for the first time and see the mysterious woman’s body. Lanie is shook up at first, but she continues to work on this case like any other.

Watch ‘Castle’ season 6, episode 9 online!

Can’t watch the show live? No problem! You can catch brand new episodes of Castle the day after it airs through services like Hulu, or directly on ABC’s website.