Most ghost tours are difficult to follow, as the guides have a tendency to walk through solid walls. Hitch up to a spooky human-led tour with today's Groupon to RJA Ghost Tours. Choose between the following options:

• For $21, you get admission for two to the Shadowy Streets of Corpus Christi ghost tour (a $43.98 value).
For $41, you get admission for two to the Tour 666 ghost tour, which travels down County Road 666 (an $83.98 value).

RJA Ghost Tours leads groups of adventurers on haunted excursions, which last about two hours on average, 365 nights a year. The Shadowy Streets of Corpus Christi ghost tour summons the city's spectral residents, mixing history, legend, and folklore for a night of ghastly sights. Active paranormal investigators lead each tour, chauffeuring specter-seekers through the streets and along Corpus Christi Beach. The guides teach techniques employed by modern ghost detectives, including how to take paranormal pictures and tap the telephones of the undead. Tour 666 drives tour-goers out to Country Road 666, a remote, pitch-black highway where cell phone reception dies out. Snap some photos and you might capture supernatural images, from floating orbs to a ghoul's department store receipt for white sheets.