General Eiling returns and the Firestorm plotline comes to a close — for now, at least — leading to one of the best final moments you’re likely to see.
Barry Allen stumbles his way through a new romance while attempting to solve the mystery of Firestorm, and Joe West and Cisco set out on their own investigation.
The new villain Peek-a-Boo teleports into Central City, Barry Allen gets a new love interest, and Cisco kicks some butt and tracks down Martin Stein in a packed, if haphazardly plotted, episode.
The Pied Piper arrives in Central City to wreak havoc and expose one of Harrison Well’s greatest secrets (no, not that one).
The Flash weathers fire and ice this week, as Captain Cold returns to Central City for the midseason premiere, and brings Heat Wave with him.
An epic battle between The Flash and the Reverse-Flash, and the arrival of Firestorm are just the tip of the iceberg in the midseason finale.
Arrow and The Flash grapple with moral issues even as they race to stop Captain Boomerang’s path of death and destruction.
A classic team-up, a superhero battle for the ages and the debut of a DC Comics character we’ve been waiting for all season. Plus … the Rainbow Raider?
More than a mundane villain of the week, the vengeful Blackout poses a threat to Barry’s powers and Harrison Wells’ life.
Barry Allen confronts his childhood tormentor in the form of Girder in an episode that initially felt clichéd but ended with an unpredictable bang.
A wedge is driven between Barry and Iris as Plastique makes her television debut. Plus, a glimpse of one of The Flash’s most iconic foes.
The introduction of Captain Cold casts a chill on Team Flash as Felicity Smoak arrives in Central City and Detective West warms to the idea of his daughter’s relationship.