Miss Peregrine's Home for Peculiar Children by Ransom Riggs

Miss Peregrine's Home for Peculiar Children - Ransom Riggs

It's more like 3.75 stars actually. 
The beginning was fantastic and the end even better but in the middle of the story the main character Jacob spent some time 

in a time loop

(show spoiler)

, so the story was dragging quite a bit.