In a new clip from "Taken," the next episode of "Arrow," Damien Darhk reveals he has William, Oliver's secret son, and gives Oliver an ultimatum: drop out of the mayoral race -- or else. Additionally, a new behind-the-scenes featurette for the episode explores why Oliver calls on Vixen's help and how he plans to get his son back from Darhk's clutches.
"Taken" -- (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV): VIXEN JOINS TEAM ARROW - Oliver (Stephen Amell) realizes he needs help battling Darhk (guest star Neal McDonough) so he calls in an old friend - Vixen (guest star Megalyn E.K.). Using her magical ability to summon animal powers, Vixen gets a lock on Darhk's location and the team goes to war. Meanwhile, Thea (Willa Holland) has a heart-to-heart talk with Malcolm (John Barrowman). Gregory Smith directed the episode with story by Marc Guggenheim and teleplay by Keto Shimizu & Brian Ford Sullivan (#415). Original airdate 2/24/16.