From the publisher's website:

Deep in the American countryside, the little town of Miller's Hollow has been infiltrated by werewolves. Each night, these monsters murder more of their fellow townsfolk. It is now time for the remaining villagers to take control of the situation and eliminate the evils that walk hidden within their midst… Werewolves of Miller's Hllow is a social deduction game of distrust, suspicion, and survival for groups of eight to eighteen players. As the tiny hamlet of Miller's Hollow lies beset by monstrous enemies, players secretly assume the roles of its various townsfolk, organizing to uncover the lyncanthropic murderers and save their town. Will they succeed, or will the werewolves devour their neighbors and bring silence to the town forever? Daybreak reveals another murder, and you count yourself lucky to be alive. You hear the clang of the bell in the village square and go to join the other villagers. Distrust and suspicion run rampant. Can you help your good neighbors root out the werewolves and save your town? Or will your desperate hunt accidentally lead to the lynching of an innocent? Werewolves of Miller's Hollow is a game of spine-tingling suspense that uses a Game Moderator to oversee the contests between the hungry werewolves and the villagers who wish to eliminate them. At the beginning of the game, the Game Moderator takes the appropriate number of character cards, shuffles them, and assigns one to each other player. Once you receive your card, you look at it in secret and place it facedown in front of yourself. This character card determines both your role within the game and your goals. If you're secretly a werewolf, you want to devour all the other non-werewolf townsfolk. When the last villager is eliminated, you win. However, if you're secretly an innocent villager, you want to help your neighbors identify and eliminate all of the werewolves. If Miller's Hollow is saved from those evil predators, you secure victory for yourself and your fellow survivors.