It sounds like a interesting and useful book for Christians who have trouble with the Death Penalty as a possible punishment by the State.
Go read the whole review and see what you think. I thought this part was a particularly interesting bit of perspective:
A theme that runs throughout the book is this: all murder is killing but not all killing is murder. Thus a person who murders another can be justly executed by the governing authorities without multiplying the evil. To kill a murderer is not to commit another murder. Rather, terrible though it is to have to take a life, it is an act of justice and a fitting penalty for one who would destroy a person made in God’s image.