Ten-year-old Zeus is kidnapped by the terrible Titans, merciless giants who enjoy snacking on humans, and when in self-defense he pulls a magical thunderbolt from a stone he begins an adventure to rescue his fellow Olympians from the evil Cronus.

The Heroes in Training are entering the Underworld—if Hades can conquer his canine fears, that is. The Underworld usually isn’t really meant to be a fun place—but tell that to Hades! He loves the dark and the stinky smell of sulfur. However, there is one thing that Hades is not a fan of: dogs. And when Zeus and his fellow Olympians encounter Cerberus—a snarling, three-headed dog—Hades must conquer his fears and tame the hound so everyone can continue into the Underworld and deposit their Titan prisoner, Oceanus, back where he belongs! But with magical water that causes forgetfulness, hot beds of lava, and another epic battle with two more Titans standing in their way, will Zeus and his heroes make it out of the Underworld with everyone intact?

Hades is the center of the (under)world in the third book of the graphic novel adaptation of the popular Heroes in Training series! The Underworld usually isn’t anyone’s idea of a fun place—except for Hades. He loves the dark and even the stinky smell of sulfur! But there is one thing that Hades is not a fan of…dogs. And when Zeus and his fellow Olympians encounter Cerberus—a mean, snarling, three-headed dog—Hades must conquer his fears and tame the dog in order for everyone to continue on to the Underworld and drop off their Titan prisoner, Oceanus, back where he belongs! With magical water that makes one forget, hot beds of lava, and another epic battle with two more Titans standing in their way, can Zeus and his heroes make it out of the Underworld with everyone intact? New readers and old fans alike will enjoy these full-color graphic novel adaptations of the long-running Heroes in Training series.

When Zeus, Hades, and Poseidon continue on a new quest in the search for the Helm of Darkness, they discover many things in the Underworld that Hades does not fear except a giant three-headed dog.

Ten-year-old Zeus is kidnapped by the terrible Titans, merciless giants who enjoy snacking on humans, and when in self-defense he pulls a magical thunderbolt from a stone he begins an adventure to rescue his fellow Olympians from the evil Cronus.

The Greek gods are real, and they've come back with a vengeance. Andy and Zoey are two normal teenagers living in the year 2018—that is, until they're knocked unconscious in a freak storm sweeping the United States. When they wake up, the world they know has been tossed away. Their city is in ruins, strange creatures walk the earth, and worst of all, everyone is gone. They stumble across Diana and Spencer, two kids around their age who possess incredible magical abilities, and who claim to be the demigod children of Greek gods. Not only that, they also claim the year is 500 AS, five hundred years after the gods conjured a massive storm that destroyed most of humanity and helped them take the world as their own once again. Andy and Zoey are soon handed an impossible task: To save humanity. To lead a war on the gods. They'll have to battle monsters, death, and their own inner demons to survive and to protect the people they love. Gods. Monsters. Magic. War on the Gods is a completed series perfect for fans of Greek mythology and dark YA fantasy. Binge it today! Praise for The Helm of Darkness: "Fabulous reading! Incredible world-building! Characters that come to life! Tons of twists, lots of action!" - Dianne at Tome Tender, ★★★★★ "Even the smallest of characters has a backstory, invoking such a love and engagement in me that it was difficult to drag myself away. I loved all of our protagonists deeply, despite their flaws and behaviours." - JK at Book Odyssey, ★★★★★ "This is the kind of book where you wonder why everyone isn't raving about it because it's the best thing since sliced bread... Mobley did a great job writing believable characters that grew over the course of the book but never strayed from their original identity. The characters in this, even minor ones, were given so much detail and show how well-thought-out the story is." - Alexia at BookishEnds, ★★★★★ "I enjoyed seeing a darker side to the Gods. Mostly in books and in real life, we picture Gods as being heavenly light and pure with good intentions. I liked how the readers for once see the greedy, hateful, controlling side as well. I highly recommend this book and cannot wait to read the next book in the series, Poseidon's Trident!" - Julia at Pages for Thoughts, ★★★★★ "For fans of Greek mythology, this story is like a treasure trove of references that is bound to satisfy your appetite." - Alessandro Reale, award-winning author of Only One Samantha, ★★★★★ "This was a fast paced, dystopian adventure that I think fans of Percy Jackson would enjoy. There are some darker elements, some instances of gore, and some twists I never saw coming, so this may be better for those fans who age out of Percy." - C.E. Clayton, author of The Monster of Selkirk series, ★★★★★ "Mobley knows how to tell a story with good pacing and that picks up on timeless themes... a great YA book which would be a solid read for anyone who reads mythology-styled fantasy. Helm of Darkness has a feel like Rick Riordan meets Stargate (the movie), or maybe Road Warrior meets Clash of Titans." - Christopher D. Schmitz at Inside the Inkwell blog and author of the Dekker's Dozen series, ★★★★★ "Author A.P Mobley has written such a unique plot that I'm actually shocked that not a lot of people know about this story. If writing about Greek mythology wasn't enough for A.P Mobley, she also placed the story in the future after the Greek Gods had taken over Earth. Isn't that interesting enough or what? Like I said before but I'll say it again, WHY ISN'T THIS BOOK WELL KNOWN BY OTHER READERS???" - P. G. Guacamole at Goodreads, ★★★★★

When ten-year-old Zeus is kidnapped, he discovers he can defend himself with a magical thunderbolt.