Excellent story; good value.
This story begins with a premise similar to that in “White Ivory” by Leslie Brooks. In both the protagonist is a respectable woman in a dull, sexless marriage who chooses to become a slave. Both characters get the sex they want; both also pay a price they do not expect. Ms Zacharias' protagonist is a high-born woman in a society resembling those described by Jane Austen: a rigid hierarchy, with strong rules about how women of the upper classes will behave. Lady Irene violates those norms. Her punishment for doing so is worse than she expects.
It puzzles this reader that men in this imagined upper-class society marry at all. Sex is freely available – to men with the money to buy slaves, at least. But not to wives of that station; these women provide some companionship, but seemingly not enough to justify marriage. Children are why upper-class men of Victorian society married: they wanted heirs. But there's no mention of children here. (Austen's women who had been married long were mothers.) Readers might be astonished that only the one wife rebels.
The present volume appears to be the first of a series. It ends with an appropriate cliff-hanging. We look forward to the sequel.