Chris Brauns has written a new book, Unpacking Forgiveness. It comes with the high marks of commendations by Jerry Bridges and m'man Ligon Duncan.
Regular readers know that my own thoughts on forgiveness don't mirror lockstep evanjellybeanicalism. (See mainly here, and as well the tag forgiveness.) My impression is that Brauns' book is along the same lines. Obviously, I haven't read it yet, but plan to read and review it when I can.
In the meanwhile, see the results of a survey Brauns did on the subject.