How do you solve the perfect equation? Pair one sharp-tongued mathematician with an aloof, handsome nobleman. Add a daring group of women hell-bent on conducting their scientific experiments. The solution is a romance that will break every rule.

Six year ago, Letitia Fenley made a mistake in society's eyes, and she's lived with the consequences ever since. When the prickly mathematician agrees to take over temporary management of Athena's Retreat - a secret haven for England's women scientists - she is wary of relying on the other club members and certainly doesn't need any help from the insufferable attractive Viscount Greycliff.

Lord Williams Huges, Viscount Greycliff, cannot afford a single misstep. Not when the directorship of England's most powerful clandestine agency is within his grasp. Tasked with helping Letty safeguard Athena's Retreat, Grey is positive that he can control the antics of the various scientists as well as manage the tiny mathematician - despite their historic animosity and simmering tension.

When faced with the possibility the Athena's Retreat will close forever these nemeses must make a choice. Will Grey turn down a chance to change history, or can Letty get to the root of the problem and prove that love is the ultimate answer?