Season 4
Murphy and Warren find themselves alive in Zona, a zombie free playground for billionaires. Meanwhile, the rest of our heroes are fighting alongside the last of the humans against the mutated Zombie Virus and the unkillable “MAD-Z's.” Warren's mysterious dream of a black rainbow and flesh-eating black rain propels the season forward and puts our heroes in the middle of an even worse Zompocalypse.
Episodes
1. Warren's Dream
Warren's apocalyptic dream of a Black Rainbow sends the group on a mysterious new mission while fighting for their lives against unkillable MAD-Z's.
2. Escape from Zona
Driven by Warren's dream of a black rainbow, Warren and Murphy make their way back to the mainland.
3. The Vanishing
When Sun Mei and Red vanish, 10K and the group must decide whether to keep looking for them, or give up and press on to Newmerica.
4. A New Mission: Keep Moving
Following Warren's dream, the team doesn't stop while crossing The Great Pile, a seemingly endless landscape of rubble and destruction.
5. The Unknowns
The team is captured by an Unseen Force and enslaved in an elaborate underground facility, forced by their mysterious captors to perform a series of bizarre, dangerous tasks.
6. Back From the Undead
Lucy fights to save Murphy's life; Warren and the others battle a biologically modified Franken-Zombie guarding a clue to Warren's dream.
7. Warren's Wedding
Shaken by the death of one of the team, something snaps in Murphy, and Warren is unable to stop him and the others from committing an atrocity as misplaced revenge.
8. Crisis of Faith
Warren and the others encounter a mysterious stranger who they think is a grave robber, but they're something much more.
9. We Interrupt This Program
The group explores an abandoned TV news station and encounters news crew zombies triggering haunting flashbacks from day one.
10. Frenemies
Doc and our heroes are reunited with Sketchy and Skeezy when they take refuge in a working barber shop full of mysterious characters, one of whom Doc knows but can't remember from where.
11. Return to Mercy Labs
Warren's dream leads our heroes back to Mercy Labs. Images in her dream drive her to search for the destroyed complex and find a mysterious cylinder of gas which she compelled to bring along.
12. Mt. Weather
Warren and our heroes must stop Zona from launching operation "Black Rainbow".
13. The Black Rainbow
The secret of Warren's dream is unlocked when they reach their final destination, the "Black Rainbow" facility.