Castle Book Annie Wersching for a Season 7 Encore 

It is confirmed that 24 alum, Annie Wersching, is set to reprise her Castle role, as ice queen Dr. Kelly Nieman, later this season.

According to David Amann, "She will definitely be resurfacing" as a tease part of TVGuide's Winter TV Preview Q & A.

Wersching first played the world's class plastic surgeon, who appeared to be a girlfriend and/ or a disciple of Castle adversary Jerry Tyson aka 3XK in the Season 6 episode "Disciple", which featured cosmetically altered Detective Javier Esposito and Dr. Lanie Parrish "lookalikes".