Rebecca Harper is a fictional character on the ABC television series Brothers & Sisters. She is portrayed by Emily VanCamp. At the age of 16, she has an affair with one of her teachers in Chicago. The teacher commits suicide when his wife finds out about this, then she moves back home. In season 1, it is thought that she is thought to be the daughter of the late William Walker and his mistress Holly Harper, Rebecca's mother. This is because William Walker's fund account's password is "S-K-T-K-J-R", the first letter of his children's names. Holly Harper denies that he is the father. The Walker family is initially reluctant to meet her, but she is invited to a family dinner and trivia game. In season 2, she starts to feel more confident in her place in the Walker family and becomes more outspoken. Holly Harper's former boyfriend, David Caplan, a photographer, comes to visit. She starts exploring her interest in photography with him. However, she starts to doubt who her father is and gets a DNA test. According to the test, it is found out that David is the real biological father of Rebecca, something that he did not know. She tells the Walkers this after Justin, one of the Walker brothers, reveals that he has romantic feelings for her. The Walkers find out that the "R" in William Walker's password actually stands for Ryan, a child he had with another mistress. In season 3, Justin and Rebecca are in a relationship, but this is kept secret until Justin tells the rest of the family. At the end of the season, they're engaged. In season 4 she plans her wedding with Justin and becomes pregnant. She has a huge argument with Justin which ends with Justin telling her that he is unsure about everything. After he realizes how much he wants to be a husband and a father, he later goes to see an upset Rebecca and tells her he still wants to get married. Rebecca has a miscarriage. Rebecca and Justin spend their honeymoon in the Ojai Ranch. In season 5, a year has passed since the last season, and Rebecca moves out of the home she shared with Justin. Justin and Rebecca divorced while he was in the Afghanistan. They still have feelings for each other. Rebecca gets offered to be a photographer in New York and any relationship between her and Justin gets ended after she leaves to New York.