One of the things I love about Olivia Waite is how she manages to fit a cohesive and compelling love story into such a small space. The sharp, deep way she sets up these characters just in the first few pages, with practically nothing but some physical description, was amazing: the headmaster and Latin mistress of a Victorian boarding school, two carefully controlled people who long to break free of that control. And then they do when all the students are home for Christmas! Plus, it was REALLY hot. I highly recommend.
WARNING (and SPOILER): While everything in the story is completely consensual, there are references to the nonconsensual use of mechanical vibrators on female psychiatry patients, in the context of consensual use of such a device.