"The final adventure in J.K. Rowling's phenomenal, best-selling Harry Potter book series"--Provided by publisher.

In 1852, when seventeen-year-old Katharine is sent to her family's estate to prove that her uncle is insane, she finds he is an inventor whose work creating ingenious clockwork figures supports hundreds of families, but strange occurences soon have her doubting her own sanity.

In the early 1800s, when her father sends her to London for a season, eighteen-year-old Juliana Telford, who prefers researching ladybugs to marriage, meets handsome Spencer Northam, a spy posing as a young gentleman of leisure.

A deadly, mysterious epidemic is sweeping the country, and young kidnap victim Callie is one of the few who survived infection, only to be sacrificed by her captors at a secret lab working with antimatter; her older brother Kai is desperate to find out what happened to her--his best hope lies with Shay, the girl who last saw Callie alive, and together they will seek answers, even if it means evading soldiers and crossing the quarantine zone.

"Following Thomas' conquest of Magnus, the young ruler must now lead his people into a new era - one which is sure to reveal dark forces at work behind the evil undercurrent that controlled Thomas' kingdom for so long"--

Follows a fourteen-year-old American girl whose life unexpectedly transforms when she moves to London in 1952 and gets swept up in a race to save the world from nuclear war.

All her life, Moss has lived in the Tower of London with her father, who serves as the executioner for King Henry VIII. Prisoners condemned to death must face Pa and his axe and Moss catches their severed heads. Her father insists he has no choice: if he leaves the Tower, he will be killed. But Moss can't bear to be the executioner's daughter any longer. When she finally finds a way out of the Tower, she discovers the river holds more dangers than...

Sixteen-year-old Gwyneth discovers that she, rather than her well-prepared cousin, carries a time-travel gene, and soon she is journeying with Gideon, who shares the gift, through historical London trying to discover whom they can trust.