Critic Mary Cadogan states, "Orczy's books are highly wrought and intensely atmospheric".[9] In The Nest of the Sparrowhawk (1909), for example, a malicious guardian in Puritan Kent tricks his beautiful, wealthy young ward into marrying him by disguising himself as an exiled French prince. He persuades his widowed sister-in-law to abet him in this plot, in which she unwittingly disgraces one of her long-lost sons and finds the other murdered by the villain. Even though this novel had no link to The Scarlet Pimpernel other than its shared authorship, the publisher advertised it as part of "The Scarlet Pimpernel Series".