Julius and Vincent Benedict are the results of an experiment that would allow for the perfect child. Julius was planned and grows to athletic proportions. Vincent is an accident and is somewhat smaller in stature. Vincent is placed in an orphanage while Julius is taken to a south seas island and raised by philosophers. Vincent becomes the ultimate low life and is about to be killed by loan sharks.

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 who were separated at a young age due to their parents' divorce. Unbeknownst to their parents, the girls are sent to the same summer camp, where they meet, discover the truth about their relationship, and come up with a plan to switch places in an effort to reunite their mother and father.

Two babies are switched at birth. When the mistake is discovered 12 years later, it leads to complications in the lives of both families. One family is affluent, with dutiful and (apparently) contented children. The other family is poor, with rambunctious (even delinquent) children, often hungry, but with lots of laughter in the house.

Two identical twin sisters, separated at birth, one truly decent but humble, the other ultra rich, conniving, and truly destructive. They soon find themselves hopelessly intertwined in each other's lives.

Raja is a rich person who returns from America to India. He gets surprised when most of them call him with different name and later he sees another look alike , Quarter Govindan, jobless guy and wanted to earn money for his Sister's life. Raja requests another Govindan to pretend like him, so that he will be able to find his enemies.

Two sets of identical twins are accidentally separated at birth. Several years later, when they are coincidentally in the same town, there is a lot of confusion and misunderstanding when people mistake them for each other.

The story revolves around Kurt Bey's journey to defend the Ottoman Empire and rescue his brother. Malkoçoğlu Ali Bey is killed in battle. He leaves the plans for the location of Don Castillani's treasure, divided into two necklaces, to his twin sons, Doğan Bey and Kurt Bey. However, Prince Murat, who opposes the sultan, and his man Mahmut Bey, join forces with Duke D'Alvarez and kidnap Doğan Bey. Doğan Bey, who was kidnapped at a young age, grows up unaware of his father, as the son of D'Alvarez. Kurt Bey, upon reaching adulthood, goes to fight against the Black Knight, who is oppressing Prince Murat and the villagers in the Balkans, under the orders of Sultan Süleyman Han. During this time, he will both encounter his brother and infiltrate the ranks of his enemies.

Cultured Mario and outlaw Lucien, twins separated at birth, join forces to avenge their parents' death at the hands of evil Colonna. Because each feels all the same sensations experienced by the other, swordplay is difficult for them. Worse yet, raised very differently, they struggle to find common ground between their conflicting personalities. But to defeat their enemy, the two will have to overcome the obstacles and work as a team.

Two sons that are separated as children grow up in drastically different environments.

A young boy thinks he's got a lookalike around him, but nobody believes him. Then, he meets Thomas and they switch homes.

Shocking news hits after young architect Dawson loses his best friend London. In his heartbreak, Dawson is compelled to launch an impossible search for London’s secret sister, twins separated as embryos. But along the way, Dawson never planned to fall in love.