Robin Wasserman's teen novels include the Seven Deadly Sins series, the Cold Awakening trilogy, Hacking Harvard and The Book of Blood and Shadow.

She is also the author of the middle grade series Chasing Yesterday. She lives in Brooklyn, New York.

Maureen Johnson was born in Philadelphia, but soon ran off to New York City to study writing and drama at Columbia University.

Along the way, she served up hamburgers in the company of mad scientists and talking skeletons in New York, worked in a bar in Piccadilly Circus, nervously worked alongside five tigers in Las Vegas, and once got mixed up with the entire cast of a major West End musical.

She is the author of The Key to the Golden Firebird and The Bermudez Triangle.

New York Times bestseller Sarah Rees Brennan is the author of the critically acclaimed Unspoken, a romantic Gothic mystery. The first book of her Demon’s Lexicon series received three starred reviews and was an ALA Top Ten Best Book for Young Adults.

She lives in Ireland. Visit her at SarahReesBrennan.com. New York Times bestseller Maureen Johnson is the author of 10 YA novels, including 13 Little Blue Envelopes, The Name of the Star and The Madness Underneath. Maureen was named one of Time magazine’s top 140 people to follow on Twitter.