Fear is the secret to happy marriages and lasting friendships, as well as the final ingredient in numerous madman-created serums. Reap its benefits with today's Groupon: for $15, you get two admissions to a walking tour from Miamitown Ghost Tours (up to a $30 value). Tours meet in front of the Miamitown Antiques store in Cleves and run seven days a week in October; check the schedule for times.

Michael and Jeff Morris, Miamitown Ghost Tours' seasoned guides and the authors of Haunted Cincinnati and Southwest Ohio, lead groups on a ghastly walking tour of outdoor sites rife with frightful history. The 90-minute excursion departs from the old Miamitown Methodist Church, leading brave patrons across the Harrison Bridge, where name-claiming debates between presidents William Henry Harrison and Benjamin Harrison have been heard to echo. Along the way, guides halt at known haunt-spots to regale their eerie narratives, most of which stem from eyewitness accounts by locals who have donated their tales to the tour. All of the legends are appropriate for children, and guests are encouraged to bring cameras to nab hair-raising evidence. The half-mile journey concludes at the church's ghoul-patrolled cemetery, where guests can tremble at unidentifiable shadows or chase down celebrity ghosts for autographs.