Fine intro to NT. Dunnett is not a risk taker, and gives fairly standard opinions. Organizes the letters by chronology, thus starts the Pauline epistles by dealing with Thessalonians. Interesting, but not persuasive way to present things - he never breathes a word as to why the Church organized the books the way they did, rather than the way he does. Overall, a good quick summary, but nothing special.
A really good introduction to the New Testament. One of several sources I used to teach this topic in my church's Adult CE class for the fall semester. Has a good way of summarizing and giving an overview of each book, and the grouping of the NT books are done in an excellent way, making each group easy to teach.