Recently posted on Review of Biblical Literature site is a review by Jean-François Racine of Campbell’s The “We” Passages in the Acts of the Apostles: The Narrator as Narrative Character. Having read the Cambpell’s work recently, I think it’s actually a well-written assessment of the book. It begins with this:

In his book The Making of Luke-Acts, published in 1927, Henry J. Cadbury described the “we” passages in the Acts of the Apostles as the “insoluble riddle” of Luke’s work. William Campbell’s book, which is a revised version of his doctoral dissertation completed at Princeton Theological Seminary, is not the first monograph to tackle this riddle, but it may be the first to approach it from a literary angle. The result is a slim volume whose argument is well-crafted and convincing overall. Campbell’s thesis is that the “we” narrator replaces Barnabas in the story as Paul’s trustworthy companion. Both Barnabas and the “we” narrator help establish Paul’s credibility and testify to the fact that the apostle’s missionary journeys and activities are prompted by divine instruction. This role of witness is important because of the suspicion and resistance Paul encounters as a result of his reversal of position with respect to the Jesus movement (12–13).