Preparators. Heart of Frost

For many centuries, the continent of Kiertania has been bound in eternal ice, and the cities are surrounded by the deadly and alluring Frost. Only snitirs inhabit it - extraordinary beasts that live simultaneously in two layers of reality, the World and the Soul. Parts of snitirs' bodies sustain life on the continent. Their hearts beat instead of train and car engines, and their eyes cut through the darkness instead of lanterns...
Sorta has become one of the best preparators. Almost every day, she goes out into the Frost with her hawk, Strom. But their main goal is not the snitirs. And the stakes are higher than ever. Meanwhile, Unelm investigates a series of brutal murders that shake Kiertania - as preparators may be involved in them.
The second book of the most mysterious and unpredictable cycle 'Preparators' by the laureate of the 'New Science Fiction' award.