A heartbroken Cupid returns to Star City to destroy anyone in love, so Oliver and Felicity decide to pose as bait with a fake wedding.
Father Tomas and partner Marcus Keane discover a new malevolent presence at a home for at-risk foster children.
A dead pool predicts Mary will die on the same day as the launch of an important Lookinglass product; a near-fatal brawl sends Pritchard to the hospital; Otto discovers glitches in Pritchard's code.