On the night of her high school graduation, Richelle Bach's father gives her and her identical twin sister, Michelle, matching opal necklaces. "These opals look identical," he tells them, "but the fire inside each is completely unique--just like the two of you." Indeed, the two sisters couldn't be more different, and their paths diverge as they embark on adulthood. Years pass, until--at their father's behest--they both come home for Christmas. What...

"Join twins Mia and Maddie and their sidekick little sister, LuLu, as they embark on another adventure, this time in their hometown of Nashville, Tennessee! There's a bit of mystery to solve for Mia, Maddie, Lulu, and Miss Julie too, when the main item in a benefit auction goes missing"--

My twin sister is the true queen of Aryd. She survives, hiding and clinging to life in the desert, while I reign as the false queen alongside the monstrous King Eidolon. There's only one escape from this gilded prison: Reven. My Shadowraith. My heart. Only the shadows that he struggles to control are growing more sinister, more powerful.
It's just a matter of time before they turn on him...and on me.
Even escape doesn't mean true freedom,

...

"Once there were two sisters born with a bond so strong that it forged them together forever. Roa and Essie called it the hum. It was a magic they cherished--until the day a terrible accident took Essie's life and trapped her soul in this world. Dax--the heir to Firgaard's throne--was responsible for the accident. Roa swore to hate him forever. But eight years later he returned, begging for her help. He was determined to dethrone his cruel father,...

Ex-con Cody Bonner hits the streets of L.A. to find her twin sister Julie's killer. But is it a mission of justice, or a quest for vengeance? Released from prison, Cody, the daughter of a famous movie star, returns to Los Angeles to solve her twin sister's murder--an investigation leading her to her mother's powerful agent and deeply enmeshing her in the life she left behind as a teenager. When she is released after six years in prison, Cody Bonner...

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...

Identical twin sisters Summer and Winter live alone on a remote island, sheltered from the fallout of a mysterious event that has laid waste to the rest of the world. They survive on rations stockpiled by their father and spend their days deep in their mother's collection of classic literature - until a mysterious stranger upends their carefully constructed reality. At first, Edward is a welcome distraction. But who is he really, and why has he come?...

Parker and Ellie McFadden join the Sentry: a group of powerful individuals who protect the planet. At a training camp for junior members, Ellie and Parker are given a chance to hone their newly realized abilities. But things are not what they seem. When a being born of greed and chaos arrives, the twins must rely on their new friends and teachers to help them defeat the fearsome threat. But most of all, they will have to rely on each other.

When seventeen-year-old Star Fuentez reaches social media stardom, her polar-opposite twin, Moon, becomes "merch girl" on a tour bus full of beautiful influencers and the grumpy but attractive Santiago Philips. When her twin sister reaches social media stardom, Moon Fuentez accepts her fate to be nothing more than her sister's camerawoman. Then Moon takes a summer job as the "merch girl" on a tour bus full of beautiful influencers and her fate begins...

Seventeen-year-old Molly Peskin-Suso knows all about unrequited love. No matter how many times her twin sister, Cassie, tells her to woman up, Molly can't stomach the idea of rejection. So she's careful. Fat girls always have to be careful. Then a cute new girl enters Cassie's orbit, and for the first time ever, Molly's cynical twin is a lovesick mess. Meanwhile, Molly's totally not dying of loneliness -- except for the part where she is. Luckily,...