New Moon is a mythos card. It first appeared in the Miskatonic Horror expansion.
Mythos Type: Environment (Weather)
Gate Opens: Esoteric Order of Dagon or Woods
Clue Appears At: Devil Reef or Historical Society
Mythos Ability: Investigators receive 1 less movement point (to a minimum of 0) during the Movement Phase. When an investigator is driven insane, he does not discard any of his Clue tokens.