There are 3 books in the The Aenigma Lights series. The newest book is Lastlight .

Keeper Kate has spent weeks searching for her missing brother. Following his trail, studying clues, using the mysterious aenigma box to help reconstruct the story of what had happened to him.But she’s gotten the story dreadfully, catastrophically wrong.Now, faced with the losses and scars from her failed search, she and…
Every step of their journey has brought Kate and Venn to new mysteries. Every answer led to new questions. Every victory to a new troubling problems.In Lastlight, they have one more chance to figure out the truth behind the events of the White Wood, solve the riddle of Renault's cursed…