A review by sherwoodreads
False Colours by Georgette Heyer

Mistaken identity is one of the best engines for comedies of manners.

This novel is at its best when the masquerade happens, but beforehand and afterward, there are conversations that go on for upwards of thirty pages and more--as if Heyer had lost her sense of timing that is so tight in her earlier books, and got complacent. Many love this one, but I can't reread it without heavy skimming; the heroes are more like the younger brothers of some of the other novels, and the heroine one of the plain but kind heroines, without much spark.