OLIVER TAKES ON HIVE — After the city is attacked again, Oliver (Stephen Amell) makes a bold move against HIVE. Malcolm (John Barrowman) checks in on Thea (Willa Holland) and leaves her with a warning. Things take a horrible turn when Damien Darhk (guest star Neal McDonough) retaliates in a brutal manner at Oliver’s mayoral holiday party. John Behring directed the episode written by Wendy Mericle & Ben Sokolowski (#409).
“Dark Waters,” the ninth episode of “Arrow” season four, airs 8 p.m. on Wednesday, Dec. 9 on The CW.