When John Mason encounters Julius LeVallon at school, recognition strikes like lightning. They've known each other before, not as friends in this life but as souls intertwined across millennia. LeVallon draws the young Mason into his rarefied world, where one learns to feel-with the deep currents of nature, to sense the forces that move beneath ordinary reality. But their connection carries a weight Mason cannot yet comprehend. Long ago, in the age of prehistory, the two of them conducted a forbidden experiment that went catastrophically wrong: they loosed an elemental force upon the world, and something was left unhinged. Now, destiny demands correction. After years apart, LeVallon summons Mason with momentous news: they have found the third participant, the one missing piece needed to recreate the experiment and set things right. Algernon Blackwood, master of the uncanny, crafts a tale that lingers at the threshold between the visible and the invisible, where memory proves stranger than death and ancient obligations echo across the void of centuries.
