| | Author's Note | p. xi |
| | Crime | |
| | The Beast | p. 3 |
| | The Professor | p. 15 |
| | First Kill | p. 28 |
| | The Institute of Legal Medicine | p. 36 |
| | The Vagabond | p. 50 |
| | Identity | p. 60 |
| | The Oak Woods | p. 72 |
| | The Body Speaks | p. 82 |
| | The Crime in Bénonces | p. 90 |
| | Never without a Trace | p. 98 |
| | In Plain Sight | p. 110 |
| | Born Criminal | p. 119 |
| | Lourdes | p. 133 |
| | Punishment | |
| | The Investigating Magistrate | p. 141 |
| | The Interview | p. 151 |
| | Professor Lacassagne | p. 167 |
| | "A Crime Without Motive?" | p. 170 |
| | Turning Point | p. 180 |
| | The Trial | p. 190 |
| | Judgment | p. 203 |
| | A Question of Sanity | p. 214 |
| | Aftermath | |
| | The Mystery of a Murderer's Brain | p. 227 |
| | Postscript | p. 237 |
| | Epilogue: The Violent Brain | p. 242 |
| | Acknowledgments | p. 251 |
| | Notes | p. 255 |
| | Bibliography | p. 283 |
| | Index | p. 289 |