Everyone assumes Bonnie is a ditsy redhead barely surviving corporate life until a late-night office attack reveals her true nature: sharp, capable, and deadly. Her unexpected display of skill draws the attention of the Fianna, a secret organization that wastes no time recruiting her as an apprentice assassin. To her surprise, Bonnie thrives in this dangerous new world. But one obstacle remains: Ronan Clarke, the Fianna’s top operative, who sees her as a joke and is now forced to rely on her as his partner. Will Bonnie ever be able to prove herself to Ronan?