Young adult fiction Moskowitz' debut young adult novelBreak,about a boyon a mission to break every bone in his body, was published in 2009 by Simon Pulse. Break was on was on the ALA's 2010 list of Popular Paperbacks for Young Adults and received a starred review from Booklist. Her sophomore novel, Invincible Summer, told over four summers dealing with the divorce of the main character's parents and summer romance, was published by Simon Pulse in 2011. Her third novel, Gone, Gone, Gone, set one year after 9/11, was published in 2012 by Simon Pulse. It was a Stonewall Honor Book for 2013. Moskowitz' fourth novel, Teeth, about a teen moving to a remote island and befriending two mysterious teens with dark secrets, was published by Simon Pulse in 2013. It received a starred review from Kirkus Reviews and Booklist. Her fifth novel, Not Otherwise Specified, was published by Simon Pulse in 2015. It tells the story of black bisexual ex-ballerina Etta, who struggles with fitting in and applies to a New York art school. Her sixth novel, A History of Glitter and Blood, was published by Chronicle in 2016. It follows rebellious fairy Beckan, who gets mixed up in a war between fairies, gnomes, and "tightropers", a mysterious fantasy people who invade the city walking on tightropes in the sky. It received a starred review from Bulletin of the Center for Children's Books. Moskowitz also co-wrote a novel with Kat Helgeson, Gena/Finn, about two teens who are fans of a cop drama and fall in love online. It was published in 2016 by Chronicle. Moskowitz self-published her next two novels, 3 and Wild, via Amazon. Her tenth novel, Salt, about a family of teenage sea monster hunters, was published by Chronicle in 2018. Salt received a starred review from Kirkus Reviews. Her next novel, Sick Kids in Love, about two chronically-ill teens who fall in love after meeting at the hospital, was published by Entangled Teen in November 2019. It received a starred review from Kirkus Reviews, Booklist, and Publisher's Weekly. It was also a nominee for YALSA's Best Fiction for Young Adults. Middle grade fiction Her debut middle grade novel, Zombie Tag, about a boy who resurrects his late older brother as a zombie, was published by Roaring Brook in 2011. Her second middle grade, Marco Impossible, was published by Roaring Brook in 2013.
