Arrow: Damien Darhk Crashes the Party In Midseason Finale Photos

Christmas comes to Star City in the first official images released from next week's Arrow midseason finale, titled "Dark Waters."

Damien Darhk will launch an attack on Oliver Queen's holiday party, and when Oliver -- who recently dedicated himself to fighting H.I.V.E. out in the open -- makes a move against the organization, Darhk will "retaliate in a brutal manner."

Could this play into who ends up in that mysterious gravesite? Only one way to find out. Check out the images and official synopsis below.

"Dark Waters" — (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV)

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). Original airdate 12/9/2015.