ransom riggs The Desolations of Devil's Acre

[lunababymoonchild]

The six book in the series of Miss Peregrine's Peculiar Children and according to Amazon the last one.

 

I'll just quote form Amazon because they put it better :

 

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

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

After a narrow getaway from a blood-thirsty hollow, Jacob and Noor reunite with Miss Peregrine and the peculiar children in Devil's Acre. The Acre is being plagued by desolations - weather fronts of ash and blood and bone - a terrible portent of Caul's amassing army.

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 can decipher its secret location.

Jacob and his friends will face deadly enemies and race through history's most dangerous loops in this thrilling page-turner, the final adventure in the beloved Miss Peregrine's Peculiar Children series.
 

I saw the similarities with Harry Potter in this one but I would heartedly recommend it.  Riggs started the series with a box of unidentified photographs and wove a story around them.  He's managed to create a six book series out of it.