Chapters in this book

1. Frontmatter i
2. Contents vii
3. Introduction 1
4. Prelude. The Legate 9
5. PART I. GREGORY IX
6. Chapter 1. A Contested Vow 19
7. Chapter 2. Reforming the Peace 45
8. Chapter 3. The Widening Gyre 71
9. Chapter 4. Christendom in Crisis 96
10. Interlude. The Vacancy 123
11. PART II. INNOCENT IV
12. Chapter 5. A New Hope 131
13. Chapter 6. The Council 154
14. Chapter 7. Christendom at War 178
15. Chapter 8. The Price of Victory 202
16. Postlude. The Afterworld 226
17. Epilogue 229
18. Abbreviations 237
19. Notes 241
20. Bibliography 283
21. Index 301
22. Acknowledgments 311