ISBN-13: 9781471403613 / Angielski / Miękka / 2016 / 640 str.
Horace F Andrews, Keeper of the fabled Box of Promises, knows that nothing is impossible. After all, he has the ability to see into the future, and his friend Chloe can walk through walls. But before either of them can master their Tan'ji a new threat looms over all the Keepers, and they must prepare to battle their eternal enemies - the Mordin.