She is best known for her "Pink Carnation" series, which follows a collection of Napoleonic-Era British spies, similar to the Scarlet Pimpernel, as they fight for Britain and fall in love.
A native of New York City, Willig discovered historical fiction when she was only six years old, while she was attempting to find books about her idol, Eleanor of Aquitaine.
Willig briefly worked for Cravath, Swaine & Moore, a law firm in New York, while authoring her "Pink Carnation" series of books, until she gave up law in order to focus full-time on the series.
[3] The course received a great deal of attention for helping to bring the romance novel academic notice.
[4][5] Since winding up the Pink Carnation series, Willig has written seven stand alone works of historical fiction as well as co-authoring four novels with fellow historical fiction authors Karen White and Beatriz Williams.