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| Cover artist | Joy Ang |
|---|---|
| Published | October 29, 2013 |
| Page count | 336 |
| ISBN | 9780545349215 (hardcover) 9780545349260 (paperback) |
| Preceded by | The Hidden Kingdom |
| Followed by | The Brightest Night |
The Dark Secret is the fourth novel in the Wings of Fire novel series and is the fourth book in arc one. It features Starflight as the main protagonist.