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Publication Order of Harrison Investigation Books
| Haunted | (2003) | Hardcover  Paperback  Kindle |
| The Presence | (2004) | Hardcover  Paperback  Kindle |
| Ghost Walk | (2005) | Hardcover  Paperback  Kindle |
| The Vision | (2006) | Hardcover  Paperback  Kindle |
| The Dead Room | (2007) | Hardcover  Paperback  Kindle |
| The Seance | (2007) | Hardcover  Paperback  Kindle |
| The Death Dealer | (2008) | Hardcover  Paperback  Kindle |
| Nightwalker | (2009) | Hardcover  Paperback  Kindle |
| Unhallowed Ground | (2009) | Hardcover  Paperback  Kindle |
| The Killing Edge | (2010) | Hardcover  Paperback  Kindle |
Chronological Order of Harrison Investigation Books |
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