Supernatural Spinoff: Kathryn Newton's Claire, 3 Others kom bij Backdoor Pilot 

spinoff has added Kathryn Newton (as Claire Novak), Katherine Ramdeen (Alex Jones) and Briana Buckmaster (Sheriff Donna Hanscum) to its cast. The trio will join Kim Rhodes (as Sheriff Jody Mills) in a backdoor pilot airing as a Season 13 episode of the long-running CW series. Our sister site Deadline first reported the news, adding that Clark Backo (

) has also joined the offshoot as a newly created character.

RELATEDSupernatural Spinoff Wayward Sisters Starring Kim Rhodes Eyed at The CW

In the project — penned by co-showrunner Andrew Dabb and writer Robert Berens — Jody and a group of troubled young women, all of them orphaned by supernatural tragedy, team up as a supreme monster-fighting force.

Ramdeen’s runaway Alex has been under Jody’s care since Season 9, when the sheriff took in the teen after she was kidnapped by vampires. Newton’s Claire, who is the orphaned daughter of Castiel’s vessel Jimmy, joined the household in Season 10 and has since gone on to become a hunter.

RELATEDSupernatural‘s Mark Sheppard Speaks Out on Exit: ‘There Are No Plans for Me to Return at Any Juncture’

Buckmaster’s Donna, meanwhile, was introduced in Season 9 as the sheriff of Stillwater, Minnesota. After learning about the world of monsters, she and Jody became friends and allies.

EPs/directors Robert Singer and Phil Sgriccia will serve as producers on

Season 13 premieres on Thursday, Oct. 12 at 8/7c on The CW, where it will now lead into Season 6 of 

If you like TVLine, you\'ll LOVE our weekly newsletter. Click here to subscribe.

Video: Arrow\'s Stephen Amell Reacts in Real-Time to That Big Season 6 News (Warning: Extremely Foul…

Smallville\'s Tom Welling Joins Lucifer, His First TV Role Since Clark Kent

The Originals @ Comic-Con: Watch First Video of Teenage Hope in Final Season

Arrow Season 6 Trailer: Oliver Finds [Spoiler] Alive on Exploded Lian Yu

Once Upon a Time Season 7 Trailer Reveals Hook as Cop, Barfly (?) Regina

1Descendants 2 Director Breaks Down the Final Battle: What Does It…117

2Is Doctor Who Backlash Terribly Timey-Whiny? Did Thrones Cameo…87

3Once Upon a Time @ Comic-Con: Season 7\'s Secret Roles Revealed, a…59

4American Horror Story: Cult Confirmed — Plus: Who\'s Returning in…52