"In Margaret and the Mystery of the Missing Body, twelve-year-old Margaret Worms is the head detective of her friends' mystery club, Girls Can Solve Anything, but by high school the club has disbanded and Margaret has developed an eating disorder that sends her to a treatment center. Once there, Margaret goes on a quest of recovery and self-discovery that combines nineties girl group series and choose-your-own-adventures with a queer and trans coming-of-age narrative"--Provided by publisher.