In the early 1990s, a boy with a mysterious past and the woman who cares for him endure a five-year journey across the war-torn Caucasus and Europe, weathering hardships and welcoming unforgettable encounters with other refugees searching for a better life.

Near the turn of the nineteenth century, Dr. Thornhollow helps teenaged Grace Mae escape from the Boston asylum where she was sent after becoming pregnant by rape, and takes her to Ohio where they put her intelligence and remarkable memory to use in trying to catch murderers.

Sixteen-year-old Ilse and her older brother Wolf must hone their magical skills to sabotage Hitler's attempt to build an atom bomb and uncover a spy using dark magic to thwart them.

"Zofia, a teenage Holocaust survivor, travels across post-war Europe as she searches for her younger brother and seeks to rebuild her shattered life"--

"An American farm girl discovers that she's an English heiress, but claiming her fortune leads to danger and intrigue"--

In Victorian London, when Montmorency and his alter ego, Scarper, reunite with Dr. Farcett, the two cooperate to capture a bomber and become involved in solving the mystery of the poisoning of a village of Scottish children.

Berlin 1942 When Bruno returns home from school one day, he discovers that his belongings are being packed in crates. His father has received a promotion and the family must move from their home to a new house far far away, where there is no one to play with and nothing to do. A tall fence running alongside stretches as far as the eye can see and cuts him off from the strange people he can see in the distance. But Bruno longs to be an explorer and...

In 1792, after leaving her violently mad mother behind in revolutionary France, seventeen-year-old Thea Hope travels to England, where she risks losing her own sanity when she creates the legendary Philosopher's Stone.

When Ellie Baum accidentally time-travels via red balloon to 1988 East Berlin, she's caught up in a conspiracy of history and magic. She meets members of an underground guild in East Berlin who use balloons and magic to help people escape over the Wall. But even to the balloon makers Ellie's time travel is a mystery. When it becomes clear that someone is using dark magic to change history, Ellie must risk everything--including her only way home--to...

After living in an Catholic orphanage for nearly four years, a naive Jewish boy runs away and embarks on a journey across Nazi-occupied Poland to find his parents.