1. Introduction: The collaborative conundrum in public policy
2. A framework for analysing collaboration: actors, collaborative domains, and public policy elements
3. Ideas, agency, and collaboration
4. Rules, agency, and collaboration
5. Ethics, agency, and collaboration
6. Expertise, agency, and collaboration
7. Emotions, agency, and collaboration
8. Objects, agency, and collaboration
9. Practice, agency, and collaboration
10. Conclusion. Prospects and possibilities for public policy collaboration.