The Joy of Self Bondage

A married woman loves bondage but doesn't dare tell her husband about it. She uses self-bondage when she has enough privacy but that opportunity rarely presents itself. Until she gets called out of town for a business conference. She has a whole week to experiment. The very first night, unknown to her a woman voyeur is watching as she decides to bind herself using time locks.
Before her stay is over she has a new friend that becomes her lesbian lover and confident.