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Publication Order of Robert Harland Books
| A Spy’s Life | (2001) | Hardcover  Paperback  Kindle |
| Empire State | (2003) | Hardcover  Paperback  Kindle |
| Brandenburg / Brandenburg Gate | (2005) | Hardcover  Paperback  Kindle |
Publication Order of House Of Skirl Books
Publication Order of Paul Samson Books
| Firefly | (2018) | Hardcover  Paperback  Kindle |
| White Hot Silence | (2019) | Hardcover  Paperback  Kindle |
| The Old Enemy | (2021) | Hardcover  Paperback  Kindle |
Publication Order of Standalone Novels
| Remembrance Day | (1999) | Hardcover  Paperback  Kindle |
| The Dying Light / The Bell Ringers | (2009) | Hardcover  Paperback  Kindle |