To discover the truth, they must journey into the realm of the dead…. Helheim holds the long-sought key to humanity's survival, but the path to it is treacherous. To reach their destination, Lif and her companions must traverse realms of searing brimstone and icy desolation, where monstrous creatures lie in wait. Spurred by haunting visions, they press on, aware that time is not on their side. Their trials are far from over. Are they destined for salvation or doomed to destruction? Only the Norns know that answer. Set against the rich and brutal backdrop of Nordic myth, The Guardian's Speaker Volumes 13 – 16 are the fourth and final part of an adult novella series which serves as a dark odyssey through the nine realms that exist around Yggdrasil, the world tree. The people are as harsh and cold as the climate that has shaped them. Those who wish to survive must fight for that right or strive to die honorably in that attempt.