And, so we return to another annual Flash Christmas episode! This year it’s called “Don’t Run,” although, luckily for us, Barry pretty much ignores that advice until the very final moments of this midseason finale.

Following the epic four-series crossover with the mid-season finale feels like a difficult task, but Supergirl episode 309, "Reign,” delivers.

Tonight’s all new episode of Constantine, “The Saint of Last Resorts,” not only serves as the show’s gripping midseason finale, but also introduces yet another face from John’s past… and from his Vertigo comic, Hellblazer.