Rick Riordan, dubbed "storyteller of the gods" by Publishers Weekly, is the author of five New York Times #1 best-selling series, including Magnus Chase and the Gods of Asgard, based on Norse myths. He is best known for his Percy Jackson and the Olympian books, which bring Greek mythology to life for contemporary readers. He expanded on that series with two more: the Heroes of Olympus, and the Trials of Apollo, which cleverly combine Greek and Roman gods and heroes with his beloved modern characters. Rick also tackled the ancient Egyptian gods in the magic-filled Kane Chronicles trilogy. Millions of fans across the globe have enjoyed his fast-paced and funny quest adventures as well as his two #1 best-selling myth collections, Percy Jackson's Greek Gods and Percy Jackson's Greek Heroes. Rick lives in Boston, Massachusetts, with his wife and two sons. For more information, go to RickRiordan.com, or follow him on Twitter @camphalfblood.

Robert Venditti is the New York Times best-selling author of The Homeland Directive and The Surrogates, as well as The Surrogates: Flesh and Bone. He also adapted the New York Times best-selling The Lightning Thief, The Graphic Novel; The Sea of Monsters, The Graphic Novel; Titan’s Curse, The Graphic Novel and Blue Bloods: The Graphic Novel. In 2012, he launched the critically acclaimed ongoing comic book series X-O Manowar. He lives in Atlanta, Georgia. Learn more at RobertVenditti.com.