"Strange is the night where black stars rise.

And strange moons circle through the skies.
But stranger still is Lost Carcosa."

Kyle Hawkes has made a career chasing ghosts for the camera, exploring haunted ruins and unraveling old legends. But when an episode of his paranormal series leaks online, it sets off a chain reaction that exposes a secret the Vatican buried: the mystery of the Yellow Sign.

From the alleys of London to the catacombs beneath Rome, Kyle and his partner Ella are hunted by a ruthless cabal obsessed with unlocking forbidden knowledge. Their only hope lies in finding Father Zacharias Stilicho, a long-missing exorcist who once stood before the King in Yellow —
and lost his mind.

As myth bleeds into reality and reason gives way to terror, they must confront an ancient power not born of this world.

"Night fell and the hours dragged on, but still we murmured to each other of the King and the Pallid Mask."