[5] Her debut novel Dear Martin, about a high school senior in a predominantly white school who starts writing letters to Dr. Martin Luther King Jr. after he has a dangerous encounter with racist police officers, was sold as a proposal in a two-book deal[6] and published in 2017 by Crown Books for Young Readers.

Stone has stated she began writing her debut novel Dear Martin after the death of Jordan Davis, a 17-year-old black high school student who was fatally shot by a white man in a hate crime in 2012.

[11] Two years after it was first published, Dear Martin again hit the New York Times bestseller list, at #1 for Young Adult Paperbacks in February 2020.

[15] It received starred reviews from Publishers Weekly[16] and Booklist,[17] and debuted on the Children's Middle Grade Hardcover New York Times bestseller list, at #5.

[18] Stone says the inspiration for the novel was a Twitter headline about a shoplifting grandma in Atlanta who turned out to be an international jewel thief.

[15] Her second young adult novel, Odd One Out, is about three queer teenagers of color in a love triangle and explores themes of gender, sexual fluidity and identity.

[5] The story follows high school senior and gas station cashier, Rico, after she sells a customer a jackpot-winning lottery ticket.

[25] Stone wrote a young adult novel Blackout, released in June 2021, which she co-authored with Dhonielle Clayton, Tiffany D. Jackson, Angie Thomas, Ashley Woodfolk, and Nicola Yoon.