Fear is the secret to happy marriages, lasting friendships, and the final ingredient in numerous madman-created serums. Explore the multiple benefits of fright with today's Groupon: for $15, you get access to any two attractions at Scarefest Scream Park in Lenox (a $30 value).

The grisly figures of the undead besiege the grounds of Scarefest Scream Park, where intrepid visitors tour unearthly edifices and lurid landscapes. An eerie hayride leads visitors through the town of Sowin, whose streets are populated with the souls of depraved maniacs and merciless calculus teachers. Encountering terrifying figures and ghastly horrors, patrons grasp their way through the labyrinth-like Castle of the Dead, or hike through the Forest of Darkness to research undead wildlife in its natural habitat. Visitors can wander through the walls of the Terror Zone Maze, confounded by twisted passageways and a total lack of GPS reception.

After an exhaustive night of shrieking, gasping, and withstanding curdled blood, customers can regain their wits with snacks and beverages in the park's beer tent. Along with nightly bonfires and live music, Scarefest projects horror movies on three large screens to keep the terror-induced adrenaline pumping. The park is open until Halloween, after which goblins, ghosts, and zombies must return to their jobs at the monocle-polishing plant.