A holistic approach to the whole issue - not just theoretical, but also with actual case studies to showcase the different manifestations of the gray issue of bribes and gifts.
Due to the ethical nature of whether something constitutes as bribes/gifts, advantage/necessity, the author also sought the opinions of author theologians and practitioners to give their input on the topic.
Overall, helpful for readers to internalize and gain a more robust view of how to deal and treat bribery and corruption in different situations and context.
Personally, wish there are more case studies :)