The Twins

The Twins is the first book in the novel series Trading Places.

Synopsis
After being separated at birth, teenage twin sisters, Kristin Hamilton and Kaitlyn Miller meet 15 years later in the summer of 1993 and switch places and to get to know one's respected families. Plus, they get to live their lifestyles after switching. Along the way, their mission to find out why they were separated in the first place.

Plot
Both twins are living in Leawood, California, but in different sections. Kaitlyn is living in the suburbs, while Kristin is living in a working-class in an apartment complex. One summer day, the twins were shopping at the Leawood Mall with their friends. They accidently bumped into one another in the restroom at the mall and were stunned to see that they looked so much alike. Then they met again as they were trying to get change for a different bus ride home, after that the two sat down and talked. After they realized that mistaken identity was what really freaked their friends out. The next day, the girls try to get in touch with one another again. Kaitlyn sends a friend request to Kristin's Facebook profile. When Kristin accepts Kaitlyn's friend request, she leaves a note on her profile asking her meet her at Leawood Park. They met ask Kristin's note said and they learn they are twin sisters. They hugged. But Kaitlyn questions Kristin on why their mother would leave Kaitlyn with their father and never returned to claim her as she promised years earlier. But, Kaitlyn comes up with an idea for the two to get to know the parent they never knew and find out why they were separated. She suggested to switch places, just for the summer. Kristin finds it a crazy idea, but agrees to go along with it. For the entire week, they have written their own manuals to give to each other on the day of the switch.

Episodes

 * The Twins - Three weeks before summer vacation, 15-year-old Kristin Hamilton visits L.A. with her cousin, Gia and friend, Brandon on a school field trip, where she meets feisty Kaitlyn Miller, also 15 years old, for the first time, as they were mistaken for one another by their friends. When Kristin returned to L.A., she meets up with Kaitlyn. They were both separated at birth and unaware of the other's existence. Kaitlyn was told by her father, David that her mother is dead and her grandfather left her with her father. Kristin had planned to travel around the world to find her father once she turns 18. Kristin and Kaitlyn, without telling anyone, decide to switch places for the summer to see what it is like living with their unknown parent and find out who split them up in the first place. Kaitlyn believes that the switch would give her an opportunity to prove her mother isn't dead and Kristin would finally meet her father without traveling around the world. After summer vacation starts, the twins switch at the local L.A. mall and switch. Kristin stays in L.A. to live with Nathan, her step mother Alyssa and Alyssa's teenage nephew, Calvin, while Kaitlyn goes to an suburban neighborhood of L.A. called Leawood to live with her mother Jennifer.
 * The First Test - Kaitlyn must wear Kristin's down-to-earth clothes and work around the house to pull off being Kristin. Kristin is shocked to find out that she has to attend summer school due to Kaitlyn failing history and she struggles to get on good graces with Alyssa, due to Kaitlyn's dislike of her.
 * Best Laid Plans - Kaitlyn is suckered into a annual water gun battle. Kristin becomes closer with Calvin, who thinks she has been replaced by an alien, as well as Alyssa. Kristin forms a friendship with Kaitlyn's best friend, Stacie Cooper, who knows of Kristin's true identity.
 * The Park - Kristin meets Alyssa's father for the first time. Kaitlyn learns about something about her mother and father when she and her mother visit Leawood Park.
 * Lost in the Park - Kaitlyn searches for some alone time to practice her dance, but gets herself lost in the park. Brandon rescues her and takes her home. Gia returns and sends Brandon home so she can look after her cousin until the adults return home. While Gia looks after her cousin, Kaitlyn tells her who she really is. Kristin and Kaitlyn reveal themselves to Gia.
 * Alien Alert - Kaitlyn explains to Gia about the reason she switched places with Kristin and she agrees to keep quiet. Meanwhile, Calvin continues to look for proof that Kristin is an alien. David takes Kristin to a set of a movie he is producing.
 * Two Dollars - Kristin accidently wrecks Calvin's toy helicopter and he retaliates by wrecking Kaitlyn's keyboard, which causes a rift between David and Alyssa. Jennifer asks Brandon's uncle Kelton to the Leawood Park Annual Summer Picnic because she is tired of waiting for him to ask her. Just when Kaitlyn's romance with Brandon is blossoming, she tells him her true identity, leaving him angry and ending their friendship and relationship. Kaitlyn explains to Kristin about her and Brandon, leaving Kristin shocked and angry that Kaitlyn risked kissing Brandon and her friendship with him in the process.
 * Double Trouble - Still angry at Kaitlyn for lying to him, Brandon agrees to keep her secret, but she reminds him that Kristin only likes him as a friend, while Kaitlyn herself has feelings for him. Elsewhere, Kaitlyn tries to gets more information from her mother about what happened between her parents, but Jennifer yells at her to forget about it. It was something Jennifer didn't want to talk about. Kendall, Jennifer's sister, reminds her that Kristin is at an age where she needs to know where her father is. After some resistance, Jennifer comes around and tells Kaitlyn the truth. Jennifer and David broke up when David got accepted into film school and Jennifer didn't want to move to L.A. She also revealed to Kaitlyn that Jennifer was pregnant, she felt weird movement where the baby was on one side and the other side at the same time. Kaitlyn relies this information to Kristin that their mother was unaware she was pregnant with twins. Kristin is studying for an final exam on history. Things hit a bump when Grandma Lisa finds out about Kaitlyn's true identity and demands that the twins switch back. She tells that twins they have to switch back earlier than they originally planned. However, the switch had to be delayed due to Kristin taking Kaitlyn's test.
 * Extra Help - Kristin successfully aces Kaitlyn's test and passes history class. However, Kristin now has other problems to worry back. Now that her grandmother knows about the switch and wants the girls back to her original families, Kristin must reveal her identity to Alyssa, hoping that she would help. However, Alyssa doesn't believe Kristin and thinks it is another one of Kaitlyn's tricks. But when she sees that Kaitlyn's birthmark isn't on her wrist, but on Kristin's ribcage, she realizes that Kristin was telling the truth. Although in shock, she covers for Kristin when David heads out for a meeting. Kristin explains the situation to Alyssa. Alyssa is upset that Kristin didn't tell her of her true identity as she felt that she would have kept it quiet. She also agrees not to say anything to David until Kaitlyn returns. Kaitlyn is invited to a end of the summer slumber party, however is a ruse to get back to L.A. After saying goodbye to her family and Brandon, Kaitlyn leaves Leawood and returns to L.A. She and Kristin are happily reunites and Kaitlyn is reunited with her original family. When