Ghosts roam the earth to complete unfinished tasks, such as making peace with a loved one or picking up the dry cleaning. Witness the errands of the undead with today's Groupon: for $26, you get a one-day admission pass, including admission to Fright Fest, at Six Flags America in Upper Marlboro (up to a $56.99 value). While Six Flags America is appropriate for all ages, Fright Fest is intended for ages 13 and up.

Fright Fest’s haunted attractions, song-laden revues, and 7 themed coasters play Hyde to Six Flags America’s Jekyll, exorcising shrieks and hollers from attendees. Courageous patrons traverse the park’s ghoul-laden grounds, surveying docked ghost ships at Skull’s Revenge, passing through a cowboy-haunted Ghost Town, and cementing fears of demonic clowns and cursed cotton candy at the Carn-Evil. Creatures creep onto the stage in DJ Ghoul and The Gang’s horrific hip-hop dance revue.

Younger visitors or year-round residents of Halloweentown can flock to the daylight hours' bevy of rides for demon-free thrills. Superman: Ride of Steel soars 20 stories into the air at 75 miles per hour, conveying a superhero's daily experience more fully than reading his secret diary. Milder thrills abound in the Halloween-themed Looney Tunes Spooky Town, where young ones board The Not-So-Scary Kiddie Hayride for spooky sessions of rail riding. Like a skeleton key or illicit dirt on concert roadies, today’s Groupon grants you all-access privileges to the park.

Though Six Flags America sometimes features a discounted price online, this Groupon still offers the best deal available.