Sam Baltrusis, author of "Ghosts of Boston" and "Ghosts of Salem," freelances for various publications and teaches journalism at Cambridge Community TV (CCTV) and Malden Access TV (MATV). 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 is producing a Haunted Boston Harbor cruise in October.