As fall sets in and the days grow shorter, the thoughts of many inevitably turn toward all things spooky. The folks at Cambridge Historical Tours (617-520-4030, cambridgehistoricaltours.org) are

Boston is home to plenty of ghastly stories, from the accidental uncovering of a mass grave full of de-limbed British Redcoats to the not-so-distant-memory of the Boston Strangler.