This is a novel about the relationship between Catherine of Valois and Owen Tudor.
I found the story here to be rather underdeveloped. Catherine and Owen meet at about the time Henry V marries Catherine and are instantly attracted to each other, but there's little chemistry between the two. Once Henry V is dead, his brother Humphrey, Duke of Gloucester, periodically appears to menace Catherine and Owen in a rather vague fashion, but nothing really comes of this plot line (although Humphrey has been held responsible for jailing Owen Tudor after Catherine's death, the book ends before this takes place). Much of the last part of the novel is taken up with rather tedious storyline involving Owen's romantic entanglement with one of Catherine's ladies (oddly, it never seems to occur to Catherine just to send the lady away). Catherine herself seems to spend an inordinate amount of time resting in bed--at almost every tense point in her story, someone gives her something to calm her nerves so that she can sleep.
There are some sweet moments between the young Henry VI and his half-brothers, and this book is an agreeable enough, quick read, but so much more could have been done with the characters here.