Degas' After the Bath c 1883

Shapiro does several clever things. She uses real artists and real connoisseurs like Gardner in the telling of the book. All the forgers Claire learns from are real, as are the techniques they used. She mixes in chapters of Isabella Gardner’s letters to her niece detailing her adventures with Degas — these are juicy fiction. She offers “A Note on the Research” at the end of the book to make clear what is history and what is fiction.

The painting techniques that Claire uses for both her forgery and her own work are consistent with current practices, as are the descriptions of the struggles of a young artists. The forgers and dealers she discovers through her Internet research were/are actual people, including John Myratt, Ely Sakhai, and Han van Meegeren, and the specifics of their crimes, methods, inventions, and punishments are also accurate. 

The details of the 1990 robbery of Gardner Museum are factual -- it remains the largest unsolved art heist in history -- with the exception of the inclusion of Degas' fifth After the Bath, which neither was stolen nor exists, although it is a composite based on his other four After the Bath works.