A ballet prodigy wakes in the African rainforest—bleeding, hunted, and alone. She doesn't remember her name, but she knows how to survive. Villagers whisper of the girl in the trees who kills the wicked and vanishes like a ghost.

Sophie Martine emerges from Africa and embarks on a clandestine MI6 mission to Russia, using her world-class ballet as cover. But when she unlocks the secret of her past, the mission becomes her own.

To safeguard civilization, Sophie Martine embeds herself as a high school senior in North Dakota. Her classmates have no idea that the friendly exchange student is actually the terrifying Angel of Death.