A family house in New Jersey watches on as twin boys are born, grow up together, and eventually become two very different men.

A pair of incestuous twin sisters travel across the American south as they serially murder a slew of unsuspecting hitchhikers.

After their mother’s sudden disappearance, a brother and sister meet their estranged aunt; although the sister takes to the aunt instantly, the brother senses something darker inside her and fears for his sister’s safety.

In a small town, Rhea and Rhoda, two vivacious, inseparable twins, are found brutally murdered and raped by a developmentally disabled man.

After her identical twin goes missing in a small, suburban town, a sixteen-year-old girl reflects on her parents' crumbling marriage and muddles through life without her other half.

A set of twins struggles with the trauma of having survived a boat accident where many of their peers died.

When a man marries a princess from Cimmeria, a country he believes he imagined into existence, he must come to terms with a culture that recognizes twins as a single person—a primary and their shadow—and the lengths a shadow twin would go to in order to become their own person.

If two sisters are born to a family, they will be competitive for life.

After his twin brother's disappearance, Doug has become haunted by childhood memories and fruitlessly determined to understand where Danny went.

A man's marriage to his college sweetheart is shadowed by his infatuation with her twin sister.