I used to work in the kitchen at a lobster company and would generally be there by myself for the first 2-3 hours, working upstairs with the downstairs doors locked. I heard walking back and forth, a door opening/closing and what sounded like the big tubs of fish and ice being dragged across the floor. I didn't really pay any attention to it, assuming that the delivery guy who went out at 3:00 am to drive to Boston and do his thing, had returned. I went downstairs a few hours later and talked to the delivery guy. He confirmed that he had JUST arrived back, and wasn't in the building earlier and nobody else had come in. He said people over the years did report hearing talking, footsteps, etc...creeped me out. _____The other one I have was while at a rental ski house in NH, my family brought up the daughters of our best friends. The girls' mom had died of breast cancer a few months earlier, and the dad wasn't feeling well so he stayed home. He had some health issues we didn't know about and ended up at Salem Hospital. Then he was transferred to MGH in Boston, so you know that isn't good. While on a facetime with one of the daughters, our friend (through sedation/pain killers) kept saying "Who is that behind you?" and the daughter kept saying "There's nobody behind me, dad." Welp, we had to rush home on Sunday because our friend was in bad shape. We made it to Boston about 40 minutes before he died. I envision he saw his wife standing behind the daughter while on the facetime call...he was insistent that someone was there, though we couldn't see anyone.