Jason and Grant head to Ireland to investigate Leap Castle, considered by many to be one of the most haunted places in the world. One of the spirits in the castle is an "elemental" that was supposedly summoned by dark arts, and is reported to be hostile and perhaps even deadly.

Continuing with their Ireland trip, TAPS travels to Lisheen Castle to investigate possible fairy activity in an area near the Castle called "the Wrath". They then board a plane to London to investigate the Viaduct Tavern, built on the site of Newgate Prison, where strange voices and touches by unseen hands have been reported.

Still on their European tour, TAPS heads to the Hellfire Caves in West Wycombe to investigate the paranormal activity. Then, on their day off, Jason and Grant take a tour of Jack the Ripper's haunts were they learn more about the gruesome murders.

TAPS returns to Louisiana to investigate the historic Oak Alley sugar plantation in Vacherie.

When Jacques Telesphore, the businessman who built the house, died of tuberculosis in 1848, his family couldn't maintain the business, and had to sell the property.

The TAPS teams is joined by the GHI team (Ghost Hunters International) in a joint investigation of the Spalding Inn located in Whitefield, New Hampshire. The Spalding Inn is said to have been purportedly haunted by the ghost of child roaming around the hallways of the inn. Other claims include a shadowy figure that also haunts and watches people on the grounds from the windows.

San Francisco, CA - Alcatraz Island (2-hour, season premiere hosted by Josh Gates of Destination Truth; TAPS reviews their 100th televised investigation before a live, studio audience at 30 Rockefeller Plaza in New York City).

TAPS returns to the Buffalo Central Terminal for a six hour live Halloween Special investigation. The special is hosted by Josh Gates (Destination Truth) and Allison Scagliotti (Warehouse 13), and several other celebrities join the night's investigation, including Ben Hansen (Fact or Faked), Meaghan Rath (Being Human), and Kofi Kingston (WWE Friday Night Smackdown).

it's off to Fort William Henry in Lake George, NY. This place dates back to before the American Revolution. Forts? Usually haunted. Pre-Revolutionary structures? Usually Haunted. Oh, and during the French and Indian war some Native Americans went haywire after defeating the British and began massacring and cannibalizing survivors. Over 1,000 people were killed. Think there may be a ghost or two sticking around from that?

After this a recap of the 2010 Ghost Hunters Live Halloween Special at Buffalo Central Terminal in Buffalo, NY.