Boardgamegeek https://boardgamegeek.com/boardgameexpansion/366213/arkham-horror-card-game-scarlet-keys-investigator
English - The tale of The Scarlet Keys begins in Arkham with a spread of mysterious disappearances. As objects, animals, and people vanish, so too do they disappear from the memory of those left behind. Only you and your fellow investigators remember them—or so you thought. When an enigmatic letter arrives, its author claiming to also remember those who disappeared, it marks the beginning of an epic journey...