Fraternal twins Nikki and Nora are forced back into each other's lives when they inherit a detective agency. As they solve a murder, they realize that their differences could be their greatest advantage.

"Once upon a time, the Peacock sisters were little girls who combed each other's tangled hair. But decades of secrets have led them to separate lives - and to telling lies, to themselves and to one another. Sylvie is getting married. Again. A librarian and widow who soothes her grief by escaping into books (and shelving them perfectly), Sylvie has caught the attention of an unlikely match: Simon Rampling, a mysterious, wealthy man from Northern England....

"An only child daydreams about what her life would be like if she had a little sister. Perhaps several little sisters. Or, even, lots and lots of little sisters. She imagines all the fun they could have... Playing together. Sharing treats. Getting into mischief. But what if she never gets to be a big sister?"--Page [2] of cover.

When Cornelia joins Napoleon's army as a traveling naturalist with the power to heal, she meets the sister she never knew existed on the opposite side of the battlefield and together, they must use the magic of flowers to solve the mystery of their mother's death, while fighting for their survival. Penniless and stranded in France after a bid to escape her cruel uncle goes awry, Cornelia Shaw is far from the Parisian life of leisure she imagined....