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. Just 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...

"Sage Winters always knew her sister was a little different even though they were identical twins. They loved the same things and shared a deep understanding, but Rosemary -- awake to every emotion, easily moved to joy or tears -- seemed to need more protection from the world. Six years after Rosemary's death from pneumonia, Sage, now sixteen, still misses her deeply. Their mother perished in a car crash, and Sage's stepfather, Alan, resents being...

"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...

"FBI Agent Atlee Pine's search for her sister Mercy clashes with military investigator John Puller's high-stakes case, leading them both deep into a global conspiracy -- from which neither of them will escape unscathed. 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...

Ex-cop Cat O'Connor is bored working for her sister, Chloe, as a personal assistant on the set of her soap opera. Until Chloe gets an opportunity to audition for the role of a lifetime and asks her identical twin to substitute for her on the soap with no one the wiser. It's a perfect switch-until Cat attracts the attention of the mysterious Mr. Tall, Dark, and Way-too-handsome leading man.

A high society amateur detective at the heart of Regency London uses her wits and invisibility as an 'old maid' to protect other women in a new and fiercely feminist historical mystery series. Lady Augusta Colebrook, 'Gus,' is determinedly unmarried, bored by society life, and tired of being dismissed at the age of forty-two. She and her twin sister, Julia, who is grieving her dead betrothed, need a distraction. One soon presents itself: to rescue...

"All Harriet Szs̀z has ever known is life onstage with her twin sister, Josie. As "The Sisters Sweet," they pose as conjoined twins in a vaudeville act conceived of by their ambitious father and managed by their practical mother, who were once theatrical stars in their own rights. Then, in an explosive act, Josie exposes the fraud in a spectacular fashion and runs away to Hollywood. The family retreats to Chicago, where Harriet must figure out how...

Jane Pool likes her safe, suburban existence just fine. She has a house, a family, (an infuriating mother-in-law, ) and a quiet-if-unfulfilling administrative job at the local college. Everything is wonderfully, numbingly normal. Yet Jane remains haunted by her past: her mercurial, absent mother, her parents' secrets, and the act of violence that transformed her life. When her estranged twin, Lila, makes contact, claiming to know where their mother...

Laurel and Daphne Wolfe, identical, inseparable redheaded twins, share an obsession with words. As adults making their way in 1980s Manhattan, their verbal infatuation begins to push them apart. Their fraying twinship finally shreds completely when the sisters go to war over custody of their most prized family heirloom: Merriam Webster's New International Dictionary, Second Edition.

In the aftermath of a NASA rocket launch gone terribly wrong, Captain Calli Chase comes face-to-face with her missing twin sister - as well as the startling truth of who they really are. Now, a top secret program put in motion years ago has spun out of control, and only Calli can redirect its course. Aided by cutting-edge technologies, the NASA investigator and scientist turned Space Force pilot sets out on a frantic search for the missing link between...