Question: What book written by Erika Mitchell was first published in April 2012?
Sentence (from "E. L. James"): 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.
Relevant evidence: Yes