It's available for pre-order on Amazon, which states that there is 576 pages.
In a Nightfall signing, she hinted that there will be a book eight. In another Nightfall signing, Shannon Messenger said she couldn't confirm a book 8 due to the publisher not allowing her, but she basically confirmed it by saying it was "very very likely," highly likely confirming it while not annoying the publishers, because she didn't technically confirm it.
Shannon announced that the title of book 7 would be announced on February 1, 2018.
The title has now been released, and the much awaited seventh book has been named: Flashback!
Sophie Foster doesn’t know what—or whom—to believe. And in a game with this many players, the worst mistake can be focusing on the wrong threat.
But when the Neverseen prove that Sophie’s far more vulnerable than she ever imagined, she realizes it’s time to change the rules. Her powerful abilities can only protect her so far. To face down ruthless enemies, she must learn to fight.
Unfortunately, battle training can’t help a beloved friend who’s facing a whole different danger—where the only solution involves one of the biggest risks Sophie and her friends have ever taken. And the distraction might be exactly what the villains have been waiting for.
In this unforgettable seventh book in the New York Times and USA TODAY bestselling Keeper of the Lost Cities series, Sophie must let the past and present blur together, because the deadliest secrets are always the ones that get erased.
Shannon Messenger has also said,
- Memory plays a big role in this book
- The book will NOT be one long flashback