"When Ashar and Shaheer meet, they quickly discover they're twins and will stop at nothing to get to know the parent they've been separated from, learning along the way that they may not like each other, but they definitely need each other."--

Aunt Saffronia drops the Sinister-Winterbottoms off at the Sanguine Spa, which is possibly owned by vampires, and where they must continue to complete the tasks they have been set if they are to see their parents again.

Lillian and Madison were unlikely, yet inseparable friends at their boarding school. Then Lillian had to leave the school unexpectedly in the wake of a scandal, and they have barely spoken since. Years later, Lillian gets a letter from Madison pleading for her help. Madison's twin stepkids are moving in, and she wants Lillian to be their caretaker. However, there's a catch: the twins spontaneously combust when they get agitated. Lillian is convinced...

Eleven-year-old Ada and her friends face zombie rabbits, alien mobs, and Puppet Cartels as they explore their small New Mexico town seeking Ada's missing twin sister.

When a Bandit King comes to take the magic that Ned's mother, a witch, is meant to protect, the stuttering, weak boy villagers think should have drowned rather than his twin summons the strength to protect his family and community, while in the woods, the bandit's daughter puzzles over a mystery that ties her to Ned.

"Meet Roger. Skilled with words, languages come easily to him. He instinctively understands how the world works through the power of story. Meet Dodger, his twin. Numbers are her world, her obsession, her everything. All she understands, she does so through the power of math. Roger and Dodger aren't exactly human, though they don't realise it. They aren't exactly gods, either. Not entirely. Not yet. Meet Reed, skilled in the alchemical arts like his...

Twins Theo and Alexander along with their sister Wil are abruptly dropped off at their Aunt Saffronia's house, where they learn they must complete a series of tasks in order to see their parents again, the first of which is solving a mystery at the Fathoms of Fun waterpark.

"Three months ago, Lena Nguyen's estranged twin sister, Cambry, drove to a remote bridge sixty miles outside of Missoula, Montana, and jumped two hundred feet to her death. At least, that is the official police version. But Lena isn't buying it. Now she's come to that very bridge, driving her dead twin's car and armed with a cassette recorder, determined to find out what really happened by interviewing the highway patrolman who allegedly discovered...

When Arthur and Rose were little, they were heroes in the Land of Roar, an imaginary world that they found by climbing through the folding bed in their grandad's attic. Roar was filled with things they loved--dragons, mermaids, ninja wizards and adventure--as well as things that scared them, including a very creepy scarecrow. Now the twins are eleven, Roar is just a memory. But when they help Grandad clean out the attic, Arthur is horrified as Grandad...

Bennie Rosato looks exactly like her identical twin, Alice Connolly, but the darkness in Alice's soul makes them two very different women. Or at least that's what Bennie believes, until she finds herself buried alive at the hands of her twin and sets herself on a course to stay alive long enough to exact revenge.