Maureen and Francine Carter are twins and best friends. They participate in the same clubs, enjoy the same foods, and are partners on all their school projects. But just before the girls start sixth grade, Francine becomes Fran -- a girl who wants to join the chorus, run for class president, and dress in fashionable outfits that set her apart from Maureen. A girl who seems happy to share only two classes with her sister! Maureen and Francine are...

Nantucket is only two and a half hours away from Martha's Vineyard by ferry. But the two islands might as well be worlds apart for a set of identical twin sisters who have been at odds for years. ust because twins look exactly the same doesn't mean they're anything alike - and Tabitha and Harper Frost have spent their whole lives trying to prove this point. When a family crisis forces them to band together - or at least appear to - the twins come...

For many long years, Atlee Pine was tormented by uncertainty after her twin sister, Mercy, was abducted at the age of six and never seen again. Now, just as Atlee is pressured to end her investigation into Mercy's disappearance, she finally gets her most promising breakthrough yet: the identity of her sister's kidnapper, Ito Vincenzo. With time running out, Atlee and her assistant Carol Blum race to Vincenzo's last known location in Trenton, New Jersey...

Emilia, a witch in the Kingdom of Italy, travels to Hell to uncover her twin sister's murderer while combating her growing affections for the Prince of Wrath.

In the autumn of 1948, Iris Digby vanishes from her London home with her American diplomat husband and their two children. The world is shocked by the family's sensational disappearance. Were they eliminated by the Soviet intelligence service? Or have the Digbys defected to Moscow with a trove of the West's most vital secrets? Four years later, Ruth Macallister receives a postcard from the twin sister she hasn't seen since their catastrophic parting...

When professional typist Letitia Glover is desperate to learn more about the fate of her twin sister Flossie, Enola enlists the help of her brother Sherlock and her friend Tewky to investigate Flossie's husband, the sudden death of his first wife, and the mysterious appearance of a black barouche.

"Now that Nina has turned the Watcher's Castle into a utopia for hurt and lonely demons, she's still waiting for the utopia part to kick in. With her sister Artemis gone and only a few people remaining at the castle - including her still-distant mom - Nina has her hands full. Plus, though she gained back her Slayer powers from Leo, they're not feeling quite right after being held by the seriously evil succubus Eve, a.k.a. fake Watcher's Council member...

Cynical and insecure, Iris has long been envious of her twin sister Summer's seemingly never-ending good fortune... including her perfect husband Adam. Called to Thailand to help her sister sail the family yacht to the Seychelles, Iris unexpectedly finds herself alone in the middle of the Indian Ocean. When she makes it to land, Iris allows herself to be swept up by Adam, who assumes that she is Summer. Now she has the golden life she's always envied,...

Eighteen-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?

Music brought Autumn, Shay, and Logan together. Autumn is a talented artist and a loyal friend. Shay was defined by two things: her bond with her twin sister, Sasha, and her love of music. And Logan has always turned to writing love songs when his real love life was a little less than perfect. But death might pull them apart-- when tragedy strikes each of them, music is no longer enough. Logan can't stop watching vlogs of his dead ex-boyfriend; Shay...