Suzanne Young is the New York Times bestselling author of The Program series. Originally from Utica, New York, Suzanne moved to Arizona to pursue her dream of not freezing to death. She is a novelist and an English teacher, but not always in that order. Suzanne is also the author of Girls with Sharp Sticks, All in Pieces, Hotel for the Lost, and several other novels for teens. Visit her online at AuthorSuzanneYoung.com or follow her on Instagram at @AuthorSuzanneYoung.

Tim Floreen majored in English at Yale and earned a Master's degree in creative writing at Boston University. He now lives in San Francisco with his partner and their two cats. Willful Machines is his first novel. You can find him online at TimFloreen.com or on Twitter at @TimFloreen.

Alaya Dawn Johnson is the author of six novels for adults and young adults. Her novel The Summer Prince was longlisted for the National Book Award for Young People's Literature. Her most recent, Love Is the Drug, won the Andre Norton Award. Her short stories have appeared in many magazines and anthologies, including Asimov's, Fantasy & Science Fiction, Interzone, Subterranean, Zombies vs. Unicorns, and Welcome to Bordertown. In addition to the Norton, she has won the Cybils and Nebula Awards and been nominated for the Indies Choice Award and Locus Award. She lives in Mexico City.

Justina Ireland enjoys dark chocolate, dark humor, and is not too proud to admit that she's still afraid of the dark. She lives with her husband, kid, and dog in Pennsylvania. She is the author of Vengeance Bound and Promise of Shadows. Visit her at JustinaIreland.com.