In 1898, Sherlock Holmes decoded a message burned into the English heath by dying alien visitors — a warning about a sealed antimatter refuge buried on Mars, and the combination needed to open it safely. The British government buried the secret. H.G. Wells called it an invasion. One hundred and forty years later, Stan, a part-time laborer on Puget Sound, finds Holmes's suppressed journal in a dead man's library. When China's Mars mission uncovers an artificial structure beneath the Martian surface, Stan realizes the journal isn't history — it's a live briefing. With the help of Gandalf, the world's most sophisticated AI — and its most carefully kept secret — Stan races to prevent an international crew from triggering a catastrophe that would vaporize the mission. What follows is first contact with an ancient alien intelligence called HAL, who chose that name deliberately, knowing what humans fear. HAL's creators were explorers, traders, artists — a civilization that crossed the stars to share what they knew. They did not survive the encounter with what came after them. Something is moving through the galaxy. It has consumed every civilization it has found. It answers Fermi's question — why the universe seems so empty — with a silence that is not natural but imposed. And humanity's first faster-than-light test flight has just announced our existence to whatever is still out there listening. A small group of soldiers, scientists, and one very ordinary man must build a defense against a threat that may arrive in decades or centuries — or tomorrow. They cannot know. They can only prepare, and wait, and trust machines that think faster than they do. The enemy is coming. It has been coming for a very long time. What Light Carries is a hard science fiction novel about what we send into the dark, what finds us in return, and the price of both.

Bob Linnell served as a United States Air Force officer, flying fighters and instructing, and served on exchange with the Royal Air Force. His civiian career included work in conventional weapons effects at USSTRATCOM. He holds a commercial pilot's license and lives in Wisconsin. What Light Carries is his first novel