I've lived in Salem and its surounding cities all my life. It is like Mardi Gras the last few weekends in October. Salem has 4 or 5 haunts, plus countless historic attractions that turn into haunted theme in October. There are indoor and ourdoor tours, walking and trolly tours, cemetary tours, museums, great restaurants and more.
Also, you will only be about an hour drive away from Nightmare New England/Spooky World, Fright Kingdom, Haunted Overload, and Witch's Woods, all which are worthy of your attendance. It is definatley worth the trip. Plenty to do, and a general creepy feeling that you can only get in Salem MA in the Fall.
Hope to see you around!
The secret of life is to appreciate the pleasure of being terribly, terribly deceived.