1. The Prophecy

Leo's gift for seeing ghosts feels more like a curse. But when his loved ones start turning into zombies, he's the only one who can save them.

3. The Mart

Leo and friends head to Germany in search of the fabled Brotherhood. Instead, they find a "Nicht Mart" who delivers bad dreams.

4. Ghost of Medusa

Leo's compass directs the airship to a desolate Italian town where the locals can see ghosts -- including one who turns spirits into stone.

5. Vodnik

While investigating sightings of a strange monster who steals children's souls, Leo and the gang unearth a far more sinister threat.

6. Fenrir

The team braves a blizzard to find a portal to Quetzalcoatl's world. But striking a deal with a mythical wolf is the only way through it.

7. Tooth Fairy

Stranded without a ship and still missing Alebrije, the gang tumbles into foggy London and uncovers a plot that's robbing orphans of their teeth.

8. Kaiju

Determined to locate the Brotherhood, Leo steers the ship to a Japanese village where monsters attack -- and normal rules no longer apply.

9. Nu Gui

In a bid to strengthen their coven, Baba Yaga and the immortal Nu Gui summon Marcella to a cave in China that's crawling with terra-cotta soldiers.

10. Mister Madera

Soon after Leo brings a creepy-looking doll aboard the ship, members of the team start going missing ... and Leo starts talking to sugar skulls.

11. The Chilan

Marcella helps Alebrije remember where he lost the Esfera. Turns out, it's back in Mexico, where an undead priest is holding it hostage.

12. Golem

When Baba Yaga sends a Golem after one of their own, the gang slips through a portal to the future to save their friend -- and the world.

13. The Serpent & the Egg

With the future of the world at stake, Leo and the Brotherhood wage an epic war against Quetzalcoatl and his Legions of Evil.