Closed Mouths
From Arkham Horror Wiki
Closed Mouths is a mythos card. It first appeared in the Innsmouth Horror expansion.
Card Information
Mythos Type: Environment (Urban)
Gate Opens: Y'ha-nthlei
Clue Appears At: No Clue
Mythos Ability: While this card is in play, Clue tokens do not appear on the board when mythos cards are resolved.
