In Beelte Bunker, Sabine finds a bunker from the war that just might help her family escape under the wall.
Finally, in Smuggler's Treasure, Liesl lives in a more peaceful time than Berlin has seen for some time. But, when a school paper leads her to dig into family secrets, she is also caught up in protests for the wall to come down.
Written for young teens, all of the hero/heroines are 13, but this series will delight older readers too. I very much enjoyed the on going themes and all the history that is included in the books. Written in a way that will keep one reading, these books are far from dry and boring. Two thumbs up!