she's very good indeed, but sadly, this is not the best example of that! It's still readable, however, at least in my opinion.
A standard device in fiction is that of the baby left on a doorstep, who, upon reaching adulthood, or something reasonably approaching that state, sets out to find the birth parents.
The author hangs a 'Pastoral Mystery" (the sub-title of the book) on this premise. Set in rural modern-day England at a country house, Cloisters, (once a monastery, of course), the past is nearly as important as the present, with generations of the same family and/or townspeople laying the groundwork for the secrecy surrounding the parentage of the heroine, Tessa Fields.
Left on the doorstep of a vicarage, Tessa is told just such an engaging story throughout her life. Her adoptive 'Mum' dies when Tessa is just 11, and she is cared for thereafter by her 'Dad', the vicar, and his housekeeper, Fergy. A short stint in London as a career girl includes time spent at The Heritage, an antique shop run by the large and shambling Angus Hunt. All is for naught, however, in the face of the increasing pressure Tessa puts on herself to discover her real parentage. A closet romantic, she makes frequent references to such unrelated Regency-period staples as highwaymen and Lord Byron.
Cannell is a master (mistress?) at inventing eccentric characters; the Tramwell sisters, Primrose and Hyacinth, loom large in Tessa's story, as does Butler (the not-quite reformed burglar who stays on as the butler); Chantal, the beautiful and clairvoyant young gypsy woman, who is in love with Tessa's own love, Harry, and who supports herself as cook at Cloisters while earning her master's degree; Harry himself, (the missing unidentified heir); Bertie, another adopted youngster who has an imaginary friend, Fred, who nearly gets them all killed, and so on. In other words, your typical English house-party guest list.
At times, Tessa is a bit much, and you may wish for the end of the book to please hurry up and get to you, but overall, this is still an engaging and witty book. It could have used better editing; if misspellings get on your nerves, you'll find yourself becoming more aggravated than most readers. Nevertheless, all does end reasonably well, for Tessa does discover her birth mum and her own real love, almost simultaneously. They also discover a secret treasure which guarantees the continuance--for years to come--of Cloisters, but with the roof finally mended.