After the city is attacked again, Oliver makes a bold move against HIVE. Malcolm checks in on Thea and leaves her with a warning. Things take a horrible turn when Damien Darhk retaliates in a brutal manner at Oliver's mayoral holiday party.
Cast: Stephen Amell, Katie Cassidy, David Ramsey, Willa Holland, Emily Bett Rickards, John Barrowman, Paul Blackthorne, Chenier Hundal, Echo Kellum, Neal McDonough, Charlotte Ross