Katrina Law Arrow

TVLine Items: Arrow Plots Nyssa vs. Talia Battle, NCIS 'Spinoff' and More

Arrow is staging a sisterly showdown.

Katrina Law will return to the CW drama as Nyssa al Ghul for a multi-episode arc, culminating in an epic fight between the former League of Assassins leader and her half-sister Talia al Ghul (Lexa Doig) in the Season 5 finale, EW.com reports.

Also appearing during the season’s final episodes are Law’s fellow Spartacus alums Manu Bennett (as Slade Wilson) and Nick Tarabay (as Captain Boomerang), whose characters are both locked up in an A.R.G.U.S. supermax prison on Lian Yu.

Law — who last visited the superhero series during Laurel’s funeral in Season 4 — currently stars on CBS’ Training Day.

Ready for more of today’s newsy nuggets? Well…

* 48 Hours: NCIS, a six-part series exploring some of the biggest cases handled by the real-life Naval Criminal Investigative Service, will debut on Tuesday, April 25 at 10/9c on CBS. NCIS star Rocky Carroll will narrate the program. (Episode 2 airs Friday, May 12, with the balance airing Tuesdays at 10 after NCIS: New Orleans wraps its season.)

* CBS will air The Late Late Show Carpool Karaoke Primetime Special 2017, which will also include a new “Toddlerography” skit, on Monday, May 22 at 10 pm.

* The Daily Show‘s Hasan Minhaj will host the White House Correspondents’ Dinner on Saturday, April 29, our sister site Deadline reports.

* Mario Lopez (Extra) and Sheryl Underwood (The Talk) will host the 44th Annual Daytime Emmy Awards, taking place Sunday, April 30. The ceremony does not yet have a broadcast network.