The Sky Vault

In "The Sky Vault," the third installment of Percy’s acclaimed Comet Cycle, a mysterious weather phenomenon in Fairbanks, Alaska, unveils a hidden government secret from WWII linked to a comet’s unknown elements. When an aircraft disappears momentarily into ominous clouds, the passengers, including local DJ Chuck Bridges, experience profound changes, sparking a quest for answers led by his son, Theo. As Theo grapples with the revelations, he confronts Sophie Chen, an enigmatic agent, and Sheriff Rolf Wagner, all while uncovering the truth behind a top-secret lab tied to the comet's origins and its impact on Earth.