National Treasure 3 confirmed to embrace spin-off series, "Edge of History," despite its negative reception. Writer Ted Elliot treating the TV show as canon, promising new layers to the franchise ...

In the years since Book of Secrets, there have been numerous rumors about National Treasure 3. Both films combined to gross over $800 million, so a third installment makes sense.

Together, the two National Treasure movies earned close to $1 billion at the box office, not adjusted for inflation. Jerry Bruckheimer produced the series, as well as the recent TV show.