Velké rozšíření živé karetní hry Call of Cthulhu obsahující 55 zbrusu nových karet, vždy po třech kopiích.

With nearly two-thirds of its cards serving to develop the identity of Yog-Sothoth and its mysteries and minions, The Key and the Gate is an excellent expansion for fans of the Ancient One and players who like the faction's strengths in discard, recursion, and control rooted in arcane knowledge. Meanwhile, it also introduces Yithians to the Living Card Game format, bolsters Sorcerers with new Spells, and bestows powerful support cards upon each of the other factions, as well as characters with the new Fated keyword.