What book written by Erika Mitchell was first published in April 2012?
E. L. James Erika Mitchell (born 7 March 1963), known by her pen name E. L. James, is an English author. She wrote the bestselling erotic romance trilogy "Fifty Shades of Grey", "Fifty Shades Darker", and "Fifty Shades Freed", along with the companion novel ""; and under "Snowqueen's Icedragon" the Twilight fan fiction "Master of the Universe" that was the basis for the Fifty Shades trilogy.
Lauren Oliver Lauren Oliver (born Laura Suzanne Schechter; November 8, 1982) is an American author of numerous young adult novels including "Panic," the Delirium trilogy; "Delirium", "Pandemonium" and "Requiem", and "Before I Fall," which became a major motion picture in 2017. Her novels have been translated into more than thirty languages internationally. Oliver is a 2012 E.B. White Read-Aloud Award nominee for her middle-grade novel "Liesl & Po", as well as author of the middle-grade fantasy novel "The Spindlers".