A SPY. AN AIRSHIP. AND A BROKEN HEART. After losing her husband to a rogue French agent, Charlotte Moncrieffe wants to make her mark in international espionage. And what could be better for recovering secret long–lost documents from the Palais Garnier than her stealth dirigible, Gossamer Wing? Her spymaster father has one condition: He won't send her to Paris without an ironclad cover. Dexter Hardison prefers inventing to politics, but his title as Makesmith Baron and his formidable skills make him an ideal husband–imposter for Charlotte. And the unorthodox undercover arrangement would help him in his own field of discovery. But from Charlotte and Dexter's marriage of convenience comes a distraction?a passion that complicates an increasingly dangerous mission. For Charlotte, however, the thought of losing Dexter also opens her heart to a thrilling new future of love and adventure.