Sam Baltrusis, author of Ghosts of Boston" and "Ghosts of Cambridge, " freelances for various publications and is the former managing editor of Scout Magazine in Somerville and Cambridge. He has been featured as Boston's paranormal expert on the Biography Channel's Haunted Encounters and Paranormal State's Ryan Buell's Paranormal Insider Radio. Baltrusis moonlights as a tour guide and launched the successful ghost tour Cambridge Haunts, and produced a new tour in Salem in 2013."