Courtney and the JSA find themselves in the fight of their lives against their biggest threat yet.

As Eclipso takes aim at the Whitmore/Dugan’s, Pat is reminded of painful memories from his past. Mike is forced to confront the guilt he feels for his role in Icicle’s…

Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream and pushes it aside. After noticing something is bothering Nia, Kara enlists…

Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives. The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).

Scott, Stiles, Melissa and Stillinski are taken hostage; Allison tracks Derek to the station.

When Lydia goes missing from the hospital, werewolves and hunters begin a search.

Isaac’s father is murdered; Scott, Stiles and Derek plan a break-out. At the same time, the Argent family remove the principal and Allison’s grandfather replaces him. Scott senses that another…

With Oliver and Barry still stuck in the other’s bodies, the two get a lead on John Deegan and head to Gotham City with Supergirl to figure out why their…

Barry Allen has long been presumed dead and his “ghost” has been haunting Jay Garrick and Kid Flash. When Batman sees it to, they realize he’s not dead — he’s…

Barry Allen has long been presumed dead and his “ghost” has been haunting Jay Garrick and Kid Flash. When Batman sees it to, they realize he’s not dead — he’s…

The team is led to a crime scene in the middle of the city involving a parachute jumper whose parachute apparently failed. And one CSI is injured when a snake…