The Twenty-Eighth Floor

"There's a couple things you gotta know about the Tesseract Building, Shorty," said Rowlie, winching down to the next floor and spraying foam onto the glass. "One, there's a vicious cross-breeze comes through here, 'specially in summertime."

They started scraping the foam away, gradually revealing the interior. Shadows shifted in the unused office. Shorty abruptly realized that the was not seeing a darkened room, but some opaque, glistening body pressed against the glass, a pulsing red mass... like a tongue... A huge exhalation of breath fogged the window from the inside. Shorty dropped his scrubber.

"That's the other," said Rowlie.