My Lady Quicksilver (London Steampunk #3)

My Lady Quicksilver (London Steampunk #3)
Determined to destroy the Echelon she despises, Rosalind Fairchild is on seemingly easy mission. Get in. Uncover the secrets of her brother's disappearance. And get out.
In order to infiltrate the Nighthawks and find their leader, Sir Jasper Lynch, Rosalind will pose as their secretary. But she doesn't count on Lynch being such a dangerously charismatic man, challenging her at every turn, forcing her to re-evaluate everything she knows about the enemy.
He could be her most dangerous nemesis—or the ally she never dreamed existed.