LOWER PAXTON TOWNSHIP, DAUPHIN COUNTY - A ghost hunter snapped what looks like a straightforward photograph inside the Allenberry Resort Inn and Playhouse last month.

It looks like a guest, a man in jeans and sneakers, entering a hotel room at the Boiling Springs-area retreat, but paranormal investigators insist no one was in the building on Sept. 21 when the picture was taken.

"It's hard to believe it is a ghost," Nick Wolfe, director of Harrisburg Area Paranormal Investigators, or HAPI, says. Wolfe's team was conducting an investigation at Allenberry when the picture was taken.

"You hear these stories where you see a real person and they just disappear out of nowhere," Wolfe says.

Allenberry staff did not immediately return repeated calls for comment.

Wolfe founded HAPI in 2001 after the death of his grandmother. He says her passing started his interest in the paranormal, but he does not jump to conclusions.

He says he's heard plenty of stories about hauntings at Allenberry.

"I'm a skeptic," he says. "I don't believe a lot of it, so everything I catch, I take very scientifically."

To do all that science, Wolfe has plenty of gear. He lays it out across a coffee table at his Lower Paxton Township home. He points out a digital thermometer, digital cameras, a voice recorder and equipment to measure electromagnetic fields.

Wolfe has been in business for eight years, but he hasn't made a cent. Every investigation is free to HAPI's clients.

"We come in with an open heart," Wolfe says. "We are non judgmental. We believe everything the client is saying."

Proving what the client is saying often means hundreds of hours of investigation.

"It's just a passion I have," Wolfe says. "I'm definitely looking for my own answers. So until then, I'm going to continue to do it."