Star City faces a major threat as Black Siren kidnaps Lance.
The team get a surprise as they investigate an Anachronism in a Viking settlement.
Olivia and Mellie assert their power like never before.
Jackson invites the guys to join him on a day out at sea.
Iris faces a tough call.
Supergirl investigates when a strange symbol pops up in National City.
We choose some Christmas gift ideas for Game of Thrones fans.
Take a sneak peek at the mid-season finale.
See all of the action from last night’s semi-final.
All of the couples danced twice in tonight’s semi-final.
The third and final chapter begins.
The limited-edition HBO collection features 20 iconic stills from the hit show.