The Killing Lock by M88 (Archive Link)
A fantastic bondage fetish story by M88 on DeviantArt that follows Skyler building and describing her extreme self-bondage cage. Skyler had realized quite some time ago that she needed something that kept her under control and severely punished her for a long amount of time. She needed something that had complete control over her and would force her to return to the vicious cage, even if she began to hate and fear it.
Preparing multiple layers and all kinds of garments to seal herself in the small cage, Skyler makes sure that everything was done in a way for her to be able to be locked in the cage for days or even weeks. Setting up the control-computer in a way, that should she not return into the cage within a given amount of time, it would release all kinds of sexual and private information and pictures of her to her family and general public, basically ruining her life.