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 a ghost tour from Sisters Grimm Candelight Ghost Tours. Choose between the following options:

• For $14, you get a 90-minute ghost tour for two (up to a $28 value).
• For $25, you get a 90-minute ghost tour for four (up to a $56 value).
  
  

Distant relatives of San Antonio's founders, tour guides Lauren, Allison, and Rachael lead Sisters Grimm Candelight Ghost Tours with a schedule of strolls through downtown locales steeped in a ghostly past. Twosomes or foursomes converge with a group of up to 30 people to explore more than 10 spooky sites, including The Alamo, The Menger Hotel, The Gunter Hotel, San Fernando Cathedral, and Emily Morgan Hotel. Donning period costumes from past centuries, the native guides dangle lanterns across the one-mile trek and recite ghostly tales into microphones that amplify the guide's voice and sometimes pick up on the otherworldly mutterings of deceased beat boxers. The eerie expedition also leads Halloween thrill seekers with a specially designated pair of tours from October 27–October 31 at 7 p.m. and 9 p.m.