The Sky Vault

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In the third installment of Percy’s acclaimed Comet Cycle, an investigation unfolds in Fairbanks, Alaska, where a mysterious weather phenomenon and a long-buried government secret from WWII converge. The comet, Cain, has introduced unknown elements to the atmosphere, causing bizarre atmospheric changes. When a plane encounters swirling, bruise-colored clouds and vanishes for a brief moment, the lives of everyone on board and in the community are irrevocably altered. Among the passengers is Chuck Bridges, a local DJ and conspiracy theorist, who later dies but not before claiming he heard something speaking from within the clouds. His son, Theo, embarks on a quest to uncover the truth behind his father's experience. Complicating his search are Sophie Chen, an agent working for a shadowy organization intent on retrieving the plane's black box, and Rolf Wagner, a widowed sheriff investigating a series of strange occurrences. Additionally, Joanna Straub, a contractor, is reconstructing a top-secret government lab hidden in the nearby White Mountains. As Theo delves deeper, the true origin of the comet and its implications for Earth reveal themselves to be more perilous and awe-inspiring than anyone could have anticipated.