What do many young-adult bestsellers have in common? The fact that they're not standalones—some of the hottest new titles this fall offer a continuation of many series in the form of sequels or prequels.
By Ally Condie
Dutton, 384 pp.: $17.99, for ages 12 and up
The conclusion to the "Matched" trilogy.
Days of Blood & Starlight
By Laini Taylor
Little, Brown, 528 pp.: $18.99, for ages 15 and up
The second book in the "Daughter of Smoke & Bone" trilogy.
By Colleen Houck
Splinter, 464 pp.: $17.95, for ages 12 and up
Book four in the "Tiger's Curse" quintet.
The Rise of Nine
By Pittacus Lore
HarperCollins, 416 pp.: $17.99, for ages 14 and up
The third book in the "Lorien Legacies."
The Evolution of Mara Dyer
By Michelle Hodkin
Simon & Schuster, 544 pp.: $17.99, for ages 14 and up
The sequel to "The Unbecoming of Mara Dyer."
The Kill Order
By James Dashner
Delacorte, 336 pp.: $17.99, for ages 12 and up
The prequel to "The Maze Runner" trilogy explores how the world came to be ravaged by natural disaster, forcing survivors to live in a place where chaos rules and a deadly virus is sure to wipe out mankind.
By Andrea Cremer
Philomel, 464 pp.: $18.99, for ages 14 and up
The prequel to "The Nightshade" trilogy travels to Scotland and delves 600 years into the past to uncover the origins of the witches and warlocks clan, the Keepers.