She'll do anything to break her sister out of prison--even get arrested on purpose.

When thirteen-year-old Valor is sent to jail, she couldn't be happier. Demidova's prison for criminal children is exactly where she wants to be. Valor's twin sister, Sasha, is serving a life sentence for stealing from the royal family, and Valor is going to help her escape . . . from the inside.

Never mind that no one has escaped the prison in centuries. Valor has a master plan and resources most people could only dream about. But she didn't count on having to outsmart both the guards and her fellow prisoners. If Valor's plan is to succeed, she'll need to make some unlikely allies. And if the plan fails, she and Sasha could end up with fates worse than prison.

This exciting middle-grade debut effortlessly melds an unforgettable protagonist, a breathless plot, and stunning world-building--and is impossible to put down.

"Prisoner of Ice and Snow is an exciting, fast-paced story, full of twists and turns. Valor is an engaging heroine who never loses courage, even when everything goes wrong. I was captivated from the first word to the last. This is a story readers will love again and again!" --Jennifer A. Nielsen, New York Times bestselling author of The False Prince

"Action-packed and full of heart, Prisoner of Ice and Snow is a riveting tale of betrayal, intrigue, and the love between two sisters. Valor's determination and the risks she takes to save her beloved twin will have you rooting for her from the very first page." --Aimée Carter, author of Simon Thorn and the Wolf's Den