"Novice teams will try to provoke spirits, and the next thing you know these things follow them home," he says. "About two years ago, we had more investigative teams calling us to help them than individual families. It was crazy."
LaChance wishes he did not believe in the paranormal.
He investigated one case involving a couple's 50-pound pit bull. The couple had treated their dog like it was their child. But when he showed up, the dog was inside its cage, dead. Blood was everywhere. He says an entity had thrown the dog, cage and all, down the hall and killed it.
Like some other paranormal investigators, LaChance talks about his work like it's a ministry. Many ghost-hunting teams don't charge for investigations. They see their work as a way to help people in distress.
"It has to do with helping someone else who is in the same situation I found myself in at one time," he says, recalling the house where he says malevolent spirits attacked his children. "When I went looking for help back when I needed it, I could not find it."
Zak Bagans meets a ghost
Back at Victoria's Black Swan Inn, Zak Bagans has his own encounter with an unexpected "visitor." It happens during the second episode of the show's eighth season.
As Bagans stands in a darkened bedroom, he learns from the inn's owner that her mother recently died in the same room only months earlier. The owner, Jo Ann Rivera, asks Bagans to summon her mother's spirit and ask her to say something that would establish her identity.
Nothing happens at first. As he stands in the deserted bedroom, Bagans tosses questions aloud at Rivera's mother while holding a recording device.
Bagans then jumps because he says he feels something enter the room. He rewinds his electronic device and pushes the play button.
The TV camera's microphone picks up the faint voice of an elderly woman saying an odd word: "Bossier."
"Bossier," Bagans says to Rivera. "What is that all about?"
Rivera is stunned. Her eyes widen, and she starts to cry. Bossier is Bossier City, Louisiana.
"Bossier is where she liked to gamble," Rivera says of her mother. "That's where she wanted to go before she died. Nobody knows that word except for me."
Rivera's voice cracks, and she wipes tears away.
"I'm sorry," she says, embarrassed by her emotion.
"Don't be sorry," Bagans says as he hugs her.
Later, Bagans says cases like these are why he became a paranormal investigator. "To help people like her, to get evidence like that -- you cannot deny that evidence."
Sure you can, say skeptics, who question whether such scenes are real or simply a bid to boost ratings.
"There's an old saying," says Zaffis, the "Godfather of the Paranormal." "To the believer, we have an overabundance of evidence. To the nonbeliever, we never have enough."
The encounter certainly appeared to leave its mark on Rivera, the owner of the Black Swan Inn. In Bagans' "Ghost Adventures," she was a shaken woman whose family was under attack by demonic entities.
Go online, though, and Rivera seems to have recovered. She posted an online essay entitled, "Yes, I Live with Ghosts!" Rivera announces that her inn is haunted and offers access to ghost-hunting teams. It's also advertised as a "world-class wedding venue" that stages more than 20 weddings each year.
In an interview that accompanies her post, a smiling Rivera adds that she's taken on another job title:
She's now a paranormal investigator.