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Castle Books Annie Wersching for a Season 7 Encore

Castle Annie Wersching 3XK Returns

The doctor is back in.

TVLine has learned exclusively that 24 alum Annie Wersching is set to reprise her Castle role, as ice queen Dr. Kelly Nieman, later this season.

“She will definitely be resurfacing,” showrunner David Amann teased as part of our Winter TV Preview Q&A.

Wersching first played the world-class plastic surgeon — who appears to have been a girlfriend and/or disciple of Castle adversary Jerry Tyson aka 3XK in the Season 6 episode “Disciple,” which featured cosmetically altered Esposito and Lanie “lookalikes.”

The ever-busy Wersching’s recent TV credits include the CBS summer drama Extant and the upcoming Amazon series Bosch, where she plays LAPD officer Julia Brasher to Titus Welliver’s titular police detective.

Castle‘s Christmas-themed winter finale, Episode 10, airs this Monday at 10/9c.