aEighteen-year-old twins Becca and Cassie, now trained, fearless fighters, hold the key to defeating the despotic United regime and freeing the people of the former United States, but at what cost?

Listen. Can you here it? Mika lives in future London, behind the Wall, safe from the Animal Plague beyond. Or so he's been told. But ever since Ellie vanished a year ago, he's suspected his world may be built on secrets - and lies. When a mysterious organization starts recruiting mutant kids to compete in violent virtual reality games, Mika takes the chance to search for his twin sister - and the truth.

"After the apocalyptic Omega, a group of orphaned teen boys learn of their dark fate and escape, joining forces with twin girls who have been imprisoned for the 'good of the republic.' In their plight for freedom, these young heroes must find the best in themselves to fight against the worst in their enemies"

Jonah was able to save all of time from collapsing but in doing so gained a twin brother, Jordan, who must learn what has happened and do his own part to save time--and his parents.

Elijah and his sister Elisha go undercover to investigate a mysterious school that is sheltering runaway teenagers for a sinister purpose.

While seeking their lost dog, Piddle, twins Josh and Danny encounter their next-door neighbor, Petty Potts, a mad scientist whose SWITCH spray accidentally turns them into spiders.

As an illegal second child hiding from the world and living vicariously through her twin brother, Rowan makes a reckless decision to go out into the world for one night of adventure and becomes a renegade on the run.

"Eleanor and Esmerelda are identical twins with a secret language all their own, inseparable until a terrible accident claims Esme's life. Eleanor's family is left in tatters: her mother retreats inward, seeking comfort in bottles; her father reluctantly abandons ship. Eleanor is forced to grow up more quickly than a child should, and becomes the target of her mother's growing rage. Years pass, and Eleanor's painful reality begins to unravel in strange...

Twins Carys and Andreus were never destined to rule Eden. With their older brother next in line to inherit the crown, the future of the kingdom was secure. But appearances-and rivals for the throne-can be deceiving. When Eden's king and crown prince are killed by assassins, Eden desperately needs a monarch, but the line of succession is no longer clear. With a ruling council scheming to gain power, Carys and Andreus are faced with only one option-to...

Assuming her twin's identity, Frey works to destroy her father. When a rebel uprising strands her in Pas, and the city comes under attack, Frey must step out of the shadows to find her missing sister and take action against her tyrant father.