Heyer's language here is detailed and elegant yet at the same time lively -- or maybe that is because her characters pop out of the page. I particularly love the Merriots. Robin is the firecracker to his sister's more laid-back observer, and they slip into their real and assumed roles like a glove. Their father is a merry sort of scoundrel -- my favorite kind.
I have a lot of sentimentality for this book. It was my first Heyer, though I picked it up only because masquerades and gender-benders intrigue me, and now it is exhausted in its old age and should be treated with care.