They are really good. The plots are tight and quick moving, the setting is detailed and rings totally true, and unlike many series, her books get better with each one. True, they are following a serialized story of the growing romance and the careers of Duncan Kincaid and Gemma James but at the same time can be read as stand alone novels as I have done far.
The relationship between the protagonists Duncan Kincaid and Gemma James is pretty believable and supporting characters like their kids Toby and Kit, Gemma's friends Hazel and Tim, Betty, Wesley, the families, their police associates Melody and Doug - they are interesting and far from one-dimensional. The dialogue also rings true.
The police procedural part- both Gemma and Duncan are with Scotland Yard- does seem well researched but is actually very familiar to all of us anglophile imbibers of Prime Suspect and other shows and movies.
Highly recommended. Can't wait to read the next one!