When the beautiful Wade twins move to Shadyside, Bobby brags to his friends that they'll both fall for him. And they do. Too bad for Bobby the twins never learned to share. He had better figure it out, or his double fun will turn to double terror.

Twelve-year-old twins Philippa and John have more adventures when they become involved in an international adventure involving the Blue Djinn, the supreme arbiter of all djinn.

The twins investigate a spooky old house to find a long-lost treasure for an old woman.

When a new girl in the Barkers' class, Carole Anne, acts like a bully, the students try talking to her and ignoring her until Morgie finally discovers what is wrong and finds a way to fix it.

Connor's time aboard the pirate ship "Diablo" has him longing to be a part of the pirate life, while his twin sister Grace prefers he choose the less dangerous path of attending the distinguished Pirate Academy.

"For as long as she can remember, Sarah's family life has revolved around her twin sister, Annie-the pretty one, the social one, the girl who can do anything. The person everyone seems to wish Sarah-with her crippling shyness-could simply become. When Annie suddenly chops off her hair, quits beauty pageants, and gains weight, the focus changes-Annie is still the star of the family, but for all the wrong reasons. Sarah knows something has happened,...

When the mother of ten-year-old twin girls marries the father of two more ten-year-old twin girls, the rivalry and jealousy are worsened by one girl's demand for a pony as a reward for accepting the new family.

Twins Moffie and Morgie are excited when they hear that their family is adopting a three-year-old Hispanic boy.

"Twins Theo and Alexander Sinister-Winterbottom have spent their vacation following clues, solving puzzles, and escaping some dreadful situations. The journey has brought them here, to Siren's Song Seaside Amusement Park, where visitors are lured in by cotton candy and carnival games--and secrets hide behind every attraction. The twins now know Essa is the enemy. But one mystery remains: Why is Essa so determined to find their parents? Will they be...

When Michael Flint is asked by a colleague to investigate a reputedly haunted house, he is intrigued. Leo Rosendale's childhood was blighted by a macabre tragedy in the grim Deadlight Hall--a tragedy that occurred towards the end of World War II, involving twins who vanished. The fate of Sophie and Susannah Reiss was never discovered, and Leo has never been able to forget them. When Michael, together with his fiancee Nell, begins to explore Deadlight...