Kinda spooky, what's everyone doing?

Not as spooky as the Doll House though. We have a security system in an old 3-story "historical land-mark" house that was dedicated totally for the doll collection of the late Millie Seton, the wife of Dr. Stanley Seton (Seton Medical Foundation). No space is wasted. Thousands of dolls from their world travels adorn shelf upon shelf, furniture, peeking out of drawers. They are all staring at you, never blinking or looking away.
Marty (tech) had to check the system there yesterday. By himself. The alarm panel is way up in the attic of the third floor. He was working on the panel as he noticed the attic door slowly closing behind him. He propped it open and kept working. He quickly finished and wasted no time getting downstairs. Later when he got back to the shop he said "That's the last time I'm working there by myself, you asshole". He scraped one of his ankles when running down the stairs, but it looks more like a tiny bite mark than a scrape.