Lord of Secrets by Erica Ridley

Some secrets should never be unveiled…

Heath Grenville is the problem-solver for London’s elite. Unmask the devious cretin skewering the ton with audacious caricatures? With pleasure. His success should keep the powerful happy. But when his work leads him to a young lady outside his class, surely he won’t do anything so scandalous as to fall in love…
By day, Miss Eleanora Winfield is a proper, unremarkable paid companion. By night, Nora’s skillful hands sketch the infamous penny caricatures rocking high society. Nora desperately needs the money…and her anonymity. But how can she keep them both, when she’s fallen for the one man whose livelihood and reputation requires him to expose her?