Testing My New Drysuit by Latexcheeks (Archive Link)
One of my absolute favourite stories ever, as it makes really heavy use of the hidden in plain sight element and even includes a human mask. The story tells about the female main character, who’s quite into scuba diving, testing their new dry-suit, as well as her bondage sessions afterwards. Things get very interesting, when her lover, Lydia, comes back home, makes some modifications to her extremely tight bondage outfit, and takes her out to church and into town.
This story was one of my very first ones coming into contact with the hidden-in-plain-sight element, and I’ve been hooked ever since, as it’s also one of the best incorporating that specific element.