R.K. · Robert D. Keppel · Robert K. · Thomas Robert Keppel
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Offender Profiling | 978-0-7593-1889-2 | 2004 | |
| Serial Murder: Future Implications for Police Investigations | 978-1-928704-18-8 | 2000 | |
| Signature Killers | 978-1-4165-8579-4 | 2007 | |
| Signature Killers | 978-0-09-927772-9 | 1998 | William J Birnes |
| Signature Killers | 978-0-671-00130-8 | 1997 | |
| The Psychology of Serial Killer Investigations: The Grisly Business Unit | 978-0-12-404260-5 | 2003 | William Birnes |
| The Riverman | 978-1-4391-9434-8 | 2010 | |
| The Riverman: Ted Bundy and I Hunt for the Green River Killer | 978-0-7434-6395-9 | 2004 | |
| The Riverman: Ted Bundy and I Hunt for the Green River Killer | 978-0-671-86763-8 | 1995 | |
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