David Neilsen joined Writopia Lab in the spring of 2013. His first book, Dr. Fell and the Playground of Doom was published by Crown Books for Young Readers in 2016. Crown published his follow-up, Beyond the Doors, in 2017. David spent a decade writing horror screenplays for Hollywood, managing to get a single, non-horror feature produced straight to DVD and optioning a not-really-horror TV pilot to 20th Century FOX. David has also written extensively on the web, and has been featured in numerous national publications, including Rolling Stone, Newsweek, and Entertainment Weekly.