I think this is a solid book of criticism. I read it for the chapters on North and South but appreciated the chapters on Our Mutual Friend just as much. Could have done entirely without the Freudian reading of Daniel Deronda, but I gather that psychoanalyzing Gwendolyn was rather a pastime of the late twentieth century.
I mainly read the part about our Mutual Friend, because I was writing a thesis on that book. It's a good supplement to ones readings about Victorian novels. Whoever wants to know more before they buy or borrow the book, can find professional reviews from scholars online.