In a nuclear arms race, you’d use anything for an edge. Even magic.
Ilse and Wolf Klein bear many secrets. Genius Ilse is unsure if her parents will ever accept her love of physics. Her brother Wolf strives for a quiet life, though he worries that there’s no place in the world for people like him. But their deepest secret lies within their blood: with it, they can work magic.
Blackmailed into service during World War II, Ilse lends her magic to America’s newest weapon, the atom bomb, while Wolf goes behind enemy lines to sabotage Germany’s nuclear program. It’s a dangerous mission, but if Hitler were to create the bomb first, the results would be catastrophic.
When Wolf’s plane is shot down, his entire mission is thrown into jeopardy. Wolf needs Ilse’s help to develop the magic that will keep him alive, but with a spy afoot in Ilse’s laboratory, the secret letters she sends to Wolf begin to look treasonous. Can Ilse prove her loyalty—and find a way to help her brother—before their time runs out?
Loyalties and identities will be tested in this sweeping fantasy and a fast-paced thriller that bravely explores the tensions at the dawn of the nuclear age.
"Ilse is a complicated, fascinating protagonist, and her scientific mind will draw in teens... it has broad appeal for alt-history and urban fantasy readers." —Booklist
"An entertaining and thoughtful sequel." —Foreword Review
"A fast-moving read sure to delight those who enjoy historical fiction." —School Library Journal