"Peri Reed's job eats her mind, but for a special task agent in hiding, forgetting the past can be a blessing. Betrayed by the man she thought she loved and the agency who turned her into the very thing she fought against, Peri abandoned the wealth and privilege of Opti for anonymity riddled with memory gaps and self-doubt. But when a highly addictive drug promises to end her dependency on those who'd use her as a tool for their own success, she must...

A tale set in a world in which technological advances have been suppressed finds particle physicist Jon Grady helping to innovate a device capable of reflecting gravity only to be targeted by a shadowy organization from the future.

¿Y si este no fuera el único universo posible? ¿Y si nuestra vida no fuera por un solo camino... sino por todos los posibles? Según la teoría del Multiverso, existen infinitos mundos al igual que infinitas son las probabilidades de nuestra existencia.

"The search for the map - and the secret behind its cryptic code - intensifies in a quest across time, space, and multiple realities" --P. [4] of cover.

A group of friends teleport to worlds of Greek and Latin words while trying to complete a vocabulary assignment in time to celebrate their town's centennial.

Kate, Michael, and Emma have passed from one orphanage to another in the ten years since their parents disappeared to protect them, but now they learn that they have special powers, a prophesied quest to find a magical book, and a fearsome enemy.

"The Interdependency, humanity's interstellar empire, is on the verge of collapse. The Flow, the extra-dimensional conduit that makes travel between the stars possible, is disappearing, leaving entire star systems stranded. When it goes, human civilization may go with it -- unless desperate measures can be taken. Emperox Grayland II, the leader of the Interdependency, is ready to take those measures to help ensure the survival of billions. But nothing...

Twins Truman and Camille, spending winter break with their paternal grandmother, follow a secret passageway to the Breath World, where all creatures of magic dwell, to find the Ever Breath, a magical stone that maintains balance between worlds.

Even though she is suffering from memory loss and hallucinations, Rylie must unravel her family's secrets in order to save herself and find her missing friend. When her dad died, Rylie left a lot of memories buried in the sand of the Mojave Desert. Memories about her dad, her old friends Nathan and Lily, and most of all, her grandfather, who cut ties with Rylie's family before he passed away. When her mom's new work assignment means their family...

While picking up milk for his children's cereal, a father is abducted by aliens and finds himself on a wild adventure through time and space.