The last thing Jacob Portman saw before the world went dark was a terrible, familiar face.

Now Jacob and Noor have been inexplicably transported back to the place where everything began - his grandfather's house. He doesn't know how they escaped from the V's loop to find themselves back in Florida. But he does know one thing for certain: Caul has returned.

Risen from the Library of Souls and more powerful than ever, Caul and his apocalyptic agenda seem unstoppable. Only one hope remains - deliver Noor to the meeting place of the seven prophesied ones. If they decipher its secret location.

The fate of all peculiardom hangs in the balance as Jacob and his friends race through some of the most dangerous loops in history and face the deadliest enemies yet in the epic conclusion to the #1 bestselling Miss Peregrine's Peculiar Children series.
(From the back cover)