A deadly scavenger hunt. Ancient obelisks hidden across Houston. A covert psychic team racing to stop an unspeakable power from being unleashed. When whispers of a high-stakes "urban exploration game" reach the Circle's Helix mainframe, Charlotte Reigns knows something isn't right. The city's new scavenger hunt promises clues, prizes, and prestige - but the obelisks at its heart hum with an energy no human should ever touch. What begins as a covert infiltration under false identities turns into a battle across hidden tunnels, abandoned courthouses, and forgotten waterworks. Each clue draws the Circle closer to the Null Prism, an ancient pattern sanctified by a secret order and fed by belief, geometry, and human will. Every obelisk unlocked brings the Prism one step nearer to breaking free. Charlotte, Mason, Marin, Sparrow and the rest of the Circle must combine their unique psychic gifts with bleeding-edge tech to sabotage the ritual before it completes. If they fail, the entity bound within the Null Prism will rewrite the city from the inside out - and Keys, the rogue orchestrator of the hunt, may be its first living mouthpiece. Quest for the Hidden Obelisks is a fast-paced supernatural thriller blending psychic suspense, high-tech espionage, and urban fantasy intrigue. Perfect for fans of covert-team mysteries, paranormal thrillers, and action-driven urban fantasy.