"A small boy tries to discover the meaning of "memory" so he can restore that of an elderly friend"--Title page verso

Sophie Foster is on the run - but at least she's not alone. Her closest friends from the Lost Cities have gone with her to join the Black Swan. They still have doubts about the shadowy organization, but the only way to find answers is to start working with them. As they settle into their new lives, they uncover secrets far bigger than anything they'd imagined. But their enemies are far from done, unleashing a terrifying plague that threatens the safety...

After five years of fighting his way past flickers of memory about the teacher who molested him and the incident that brought the crime to light, eighteen-year-old Josh gets help in coping with his molestor's release from prison when he finally tells his best friends the whole truth.

ZJ's friends Ollie, Darry and Daniel help him cope when his father, a beloved professional football player, suffers severe headaches and memory loss that spell the end of his career.

Cam uses her photographic memory to track down a missing gift sent by Grandpa Shelton to Eric's father, who is finally graduating from college.

Seventeen-year-old mathematical genius Peter Blankman battles his lifelong panic attacks as he tries to find his missing twin sister, Bel, and those who nearly assassinated his mother, a famous scientist.

Sophie Foster is still struggling. Grieving. Scrambling. But she knows one thing: she will not be defeated. The Neverseen have had their victories--but the battle is far from over. It's time to change tactics. Make sacrifices. Reexamine everything. Maybe even time for Sophie to trust her enemies. All paths lead to Nightfall--an ominous door to an even more ominous place--and Sophie and her friends strike a dangerous bargain to get there. But nothing...

Rendered a subject of gossip after a traumatic night that left her with terrible scars on her arms, Echo is dumped by her boyfriend and bonds with bad-boy Noah, whose tough attitude hides an understanding nature and difficult secrets.

Kyra, who is also known as Goth Girl, returns home from the Maryland Mental Health Unit to find out that things have changed, particularly her friend Fanboy, who has transformed into somebody she barely recognizes, which causes her anger and dark memories to return.

Aileana Kameron is the Falconer, born to hunt and slay the faeries who prey on mankind--but now, in 1847, the great battle is past, Edinburgh lies in ruins, and Aileana is a prisoner of the Fae prince Lonnrach, whose sister murdered her mother, and somehow she must find a way to escape, before he can steal her memories.