08:54 AM EDT 11/01/2009

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Haunted This Halloween? Call a Real Ghostbuster! | Dan Aykroyd

Haunted This Halloween? Call a Real Ghostbuster!

Originally posted 10/31/2009 07:30AM

While the brand new movie Paranormal Activity is, er, knocking 'em dead at the box office, other ghostly spirits have been haunting us for centuries – and not all of them should be welcomed with open arms, according to experts.

Appearing on a special Halloween edition of CNN's Larry King Live Friday, a host of ghosthunters, paranormal activists and psychics – as well as ghost victim Joan Rivers and Ghostbusters star Dan Aykroyd and his séance authority father, Peter Aykroyd – debunked the disbelievers, often with jaw-dropping stories.

Rivers delivered a seriously convincing account about how a malicious spirit was haunting her New York apartment – keeping the place cold, causing havoc with the electrical power and scaring her dogs from entering the residence. When she told her elevator man what was going on, he said, "Sounds like Mrs. Spencer [the former occupant] is back."

"I used to say, this is stupid, this is nonsense," Rivers said of her unseen but clearly felt visitor. Then, "at one point, you cannot say this anymore. Something is going on here."

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