One twin is a boy and one twin is a girl

Two identical twin sisters, separated at birth by their parents' divorce, are reunited years later at a summer camp, where they scheme to bring their parents back together. The girls, one of whom has been living with their mother and the other with their father, switch places after camp and go to work on their plan, the first objective being to scare off a gold-digger pursuing their father.

Hallie Parker and Annie James are identical twins separated at a young age because of their parents' divorce. Unknowingly to their parents, the girls are sent to the same summer camp where they meet, discover the truth about themselves, and then plot with each other to switch places.

Twins Tia Landry and Tamera Campbell were separated and adopted at birth. Fourteen years later, they encounter each other by chance at the mall. After the families meet, Tia's widowed father agrees to let Tamera and her single mother move in with them.

Sisters Charlotte and Lucy Bonnard live together in the gloomy Louisiana family mansion that they’ve turned into a boarding house. But when a mysterious young man enters their lives, the sisters are forced to confront their dark pasts.

Kate and Charlie like to have a good time. Their marriage thrives on a shared fondness for music, laughter… and getting smashed. When Kate’s partying spirals into hard-core asocial behavior, compromising her job as an elementary schoolteacher, something’s got to give. But change isn’t exactly a cakewalk. Sobriety means she will have to confront the lies she’s been spinning at work, her troubling relationship with her mother, and the nature of her bond with Charlie.

Through exaggerated tales of distant rumors, two frat guys speculate over a fight between their brothers.

As a corporate auditor who works in a number of different offices, Jonathan McQuarry wanders without an anchor among New York's power brokers. A chance meeting with charismatic lawyer Wyatt Bose leads to Jonathan's introduction to The List, an underground sex club. Jonathan begins an affair with a woman known only as S, who introduces Jonathan to a world of treachery and murder.

The show's premise revolves around a pair of twin sisters who were separated when they were young, and as adults the younger sister is forced to act as a "replacement" for her wealthy twin who wants to temporarily leave her husband and his family to enjoy a life of luxury with multiple lovers.

Elliot, a successful gynecologist, works at the same practice as his identical twin, Beverly. Elliot is attracted to many of his patients and has affairs with them. When he inevitably loses interest, he will give the woman over to Beverly, the meeker of the two, without the woman knowing the difference. Beverly falls hard for one of the patients, Claire, but when she inadvertently deceives him, he slips into a state of madness.

Elliot and Beverly Mantle are twins who share everything: drugs, lovers, and an unapologetic desire to do whatever it takes — including pushing the boundaries on medical ethics — in an effort to challenge antiquated practices and bring women’s healthcare to the forefront.