Introduction
1. The principle of unjust of enrichment
Part I: What is an enrichment?
2. The enrichment mystery
3. The law's test for enrichment
4. Enrichment and objectivity
5. Enrichment and economics
6. The law's objective test and (subjective) value
7. Relational value
Part II: Is the law of unjust enrichment about enrichment?
8. Enrichments that are not 'enrichments'
9. 'Enrichments' that are not enrichments
10. Subjective devaluation and freedom of choice
11. Concluding remarks on 'enrichment'
Part III: What is the injustice in an unjust enrichment?
12. Unjust enrichment as a moral principle
13. The adequacy of the principle against unjust enrichment
14. The injustice I: intention
15. The injustice II: effective but defective transfer
16. The injustice III: miscellaneous considerations
Part IV: What is the scope of unjust enrichment?
17. No transfer I: title
18. No transfer II: trusts
19. No transfer III: services
20. The wrong defect: transfers under contract
21. Miscellaneous issues
22. Conclusion.