The Deep Gate je kniha zo sveta H.P. Lovecrafta. Obsahuje aj karty Silasa Marsha, ktorý sa tak stane plnohodnotným vyšetrovateľom so všetkými silnými i slabými stránkami, ktorú si môžu hráči kartovej verzie Arkham Horroru pridať do hry.

Discover what secrets have been drowned in Devil Reef in The Deep Gate! This Arkham Horror novella by Chris A. Jackson takes readers on a voyage up the Miskatonic River running through Arkham and the along the coasts of fear-shadowed Innsmouth where sailor Silas Marsh seeks answers about the nightmares that have plagued him since his parents' death. Including full-color inserts of the evidence that Silas has at his disposal, this thrilling novella invites readers to step into the role of investigators searching for answers alongside Silas. But be wary- each answer you uncover brings you closer to the dangers that lurk just beneath the waves.

In addition to a hardcover copy of the novella, The Deep Gate includes four exclusive cards for Arkham Horror: The Card Game which allow players to add Silas Marsh to their team of investigators, marking his first appearance in the game. These cards enable players to build a deck for Silas Marsh, complete with a signature asset and weakness. With these new implements to expand your investigations in the Arkham Horror Files universe, you are ready to set sail and confront the evils that arise from The Deep Gate!