And the firm had two partners...

Transformation - In the explosive season finale, Nicky learns what is needed to open the forge. Meanwhile, an emergency at home threatens to derail Althea and Dennis' tea ceremony.

Heart of the Matter - Part 2 - The Flash enlists a host of speedster allies, including Iris and his children from the future—Bart and Nora West-Allen—to end the speedster war and defeat a deadly new adversary: the villainous Godspeed.

Brianna's Favorite Pencil - The Unit competes for a chance to commune with the dead during Samhain. Scylla and Anacostia search for Camarilla leadership by attending a Halloween gala and make a horrifying discovery.

Fail Safe - Superman pays a visit to Morgan Edge. Meanwhile, Lois and Chrissy work together on a story. Lastly, Jonathan finds a welcome distraction during a very stressful school day.

New Day - A cautiously optimistic Belinda walks a fine line with Tanya, while Armond brainstorms ways to deal with Shane. After her husband belittles her work, Rachel approaches Nicole for advice. Paula and Olivia lose track of their stash, while a revived Mark attempts to connect with Quinn.

Bad Blood - With Constantine obsessed with getting his powers back, he convinces Spooner to join him on the quest to find the Fountain of Imperium. After they find themselves at the end of the Spanish Civil War, Spooner makes an unexpected bond with someone she feels the need to protect them from everyone, including Constantine. Now that they have a special guest on board the Waverider, Nate, Zari, Behrad, Gary and Astra all work together but experience some growing pains along the way. Meanwhile, Sara and Lita are concerned about Rory's health, so they try to convince him to take it seriously.

Z is for Zombies