If you are familiar with Orczy's "Scarlet Pimpernel" novels, this follows the usual formula (Marguerite and Percy are BOTH held hostage in this one!) and though it was written long after "TSP" was first published, Orczy's style - not to everyone's taste - is still instantly recognisable; she over-uses the same words and some of her attitudes are definitely of their day. However she has developed the relationship between M and P (the action takes place a year after the reconciliation in "TSP") in a believable and quite satisfying way, and she maintains the suspense to the end of the story.
This edition of the novel is, however, shoddy: on the final page it says it is printed in Britain by Amazon; unfortunately they did not see fit to proof-read it properly (resulting in innumerable typo errors and sometimes a complete mashing of the sense – e.g. “all that would have been brought bread and meat for the poor”) and for some reason absolutely none of the accents have been included in French names or words, which is just lazy, a fundamental mistake and very annoying.
The text begins on the reverse of the title page, which seems a bit weird, and there is no indication of the date first published or by whom, etc., or of other Scarlet Pimpernel or Orczy novels, if you want that.
So to anyone wanting to read this novel for the first time, my advice would be to buy a proper version: if you are a “real book” fan, there are various second-hand editions available – even the Stratus version has fewer typos!