In the near future, the conjoined Armstrong twins, under the guise of the Armstrong Fancy Gifts Corporation, plot to create their own version of utopia using nanobots, while a guerilla group known as BZRK develops a DNA-based biot that can stop bots, but at risk of the host's brain.

On a winter night in 1964, Dr. David Henry is forced by a blizzard to deliver his own twins. His son, born first, is perfectly healthy. Yet when his daughter is born, he sees immediately that she has Down's Syndrome. Rationalizing it as a need to protect Norah, his wife, he makes a split-second decision that will alter all of their lives forever. He asks his nurse to take the baby away to an institution and never to reveal the secret.

But Caroline,

...

Jake and Lily are twins and have always felt the same--like two halves of one person--but the year they turn eleven and Jake begins hanging out with Bump Stubbins, everything changes

Queen of Suspense and #1 New York Times bestselling writer Mary Higgins Clark brilliantly weaves the mystery of twin telepathy into a mother's search for a kidnapped child, presumed dead in this "riveting...suspense thriller [that] is certain to send terror into the heart of any parent" (Publishers Weekly).
Hours after throwing a third birthday party for their twins Kathy and Kelly in their Connecticut home, Margaret and Steve...

"When Kai's twin sister, Kishi, is stolen and killed by the legendary Ghost Whale, Kai sets out a long and dangerous adventure to bring her back to life"--

Simon Quinn can have any woman he wants, but he prefers them jaded, worldly, and free of illusions. His life is one of danger and temporary pleasures. An Irish commoner, he has nothing more than his expertise as a lover and mercenary to recommend him and no title, property, or family to redeem him. Lysette Rousseau is a deadly beauty who can seduce or betray with equal skill. She should be just the sort of woman Simon entertains, but something about...

Inexplicable events start to occur when sixteen-year-old twins Tennyson and Brontë befriend a troubled and misunderstood outcast, aptly nicknamed Bruiser, and his little brother, Cody.

While true-crime afficionado Ellery and her twin brother are staying with their grandmother in a Vermont community known for murder, a new friend goes missing and Ellery may be next. Ellery has heard all about Echo Ridge. Her aunt went missing there at age seventeen; only five years ago, a homecoming queen was killed. Now Ellery is living there, with a grandmother she barely knows. Whens someone declares open season on homecoming, another girl goes...

Olivia Morrow, a Manhattan psychologist, begins to suspect that her husband Jonathan, a brilliant obstetrician and medical researcher, may have been murdered instead of his twin brother, Charles. Her search for the truth plunges her into life-threatening danger which is only increased when she crosses the path of Henry Patton, a criminologist, who is on a search of his own, the truth behind a long-ago scandal involving his grandmother that must now...