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Katherine Wentworth
Dallas character
First appearance October 30, 1981
Little Boy Lost
Last appearance October 2, 1987
The Sun Also Rises
Portrayed by Morgan Brittany
Duration 1981–85, 1987
Occupation Owner of Wentworth Tool & Die
Television journalist
Family Herbert Wentworth (father)
Rebecca Barnes Wentworth (mother)
Relatives Tyler Barnes (half-brother)
Cliff Barnes (half-brother)
Catherine Barnes (half-sister)
Pamela Barnes Ewing (half-sister)
Pamela Rebecca Barnes (niece)
Christopher Ewing (adoptive nephew)

Katherine Wentworth is a fictional character from the CBS primetime soap opera Dallas, played by Morgan Brittany between 1981 and 1987.


Katherine Wentworth was the daughter of Herbert Wentworth (John Martin) and his wife Rebecca (Priscilla Pointer).

Katherine was an only child and, while she was growing up, she was unaware of her half-siblings, Cliff (Ken Kercheval) and Pamela Barnes (Victoria Principal), from her mother's previous marriage to Willard "Digger" Barnes (David Wayne/Keenan Wynn). Her father was a multi-millionaire. He was the owner and founder of Houston's Wentworth Industries; and he, too, was unaware of his wife's previous marriage and other children although, unlike Katherine, Herbert never found out about their existence.

Katherine attended an exclusive school in Switzerland. As an adult, she worked as a TV journalist in New York City prior to arriving in Dallas.


When Katherine was first seen in the show she appeared annoyed at her half-brother Cliff, due to his lack of subtlety with how he ran Wentworth Tool & Die, which was Herbert Wentworth's first company. At that time, Katherine had a much better relationship with her half-sister Pam.

After her mother's death in an airplane crash, Katherine quickly became infatuated with her brother-in-law, Bobby Ewing (Patrick Duffy), which complicates Bobby's marriage with Pam. Katherine is jubilant when her subtle scheming from behind the scenes makes the vital difference in leading to Bobby and Pam divorcing. However, an old flame of Bobby's, Jenna Wade (Priscilla Beaulieu Presley), reappears on the scene, putting another obstacle in Katherine's way of trying to form a relationship with Bobby. Katherine unsuccessfully attempts to bribe Jenna to leave Dallas. She then tracks down Jenna's ex-husband, Renaldo Marchetta (Daniel Pilon), in another attempt to split up Bobby and Jenna.

Katherine then sleeps with Bobby's brother J.R. (Larry Hagman) in the hope that it would persuade J.R. to help her in breaking up Bobby and Jenna. Instead, J.R. records their tryst and proceeds to blackmail her. J.R. makes it clear that he wants Bobby to marry Jenna, believing that such a marriage would reduce Bobby's appetite for the top job at Ewing Oil, would reduce Bobby's ties to the Barnes family, and would prevent a powerful alliance of Bobby in Ewing Oil with Barnes-Wentworth businesses that J.R. would feel more threatened by in the event of a Bobby-Katherine relationship. Eventually, Katherine confesses to Bobby that she had slept with J.R., wrongly believing that J.R. has already played Bobby the tape of them in bed, but Bobby tells Katherine that he has never liked her in a sexual way. Bobby starts to realize the trouble that Katherine has caused in his life, and Pam later finds out that Katherine faked a letter which led to the end of Bobby and Pam's marriage. Pam tells Katherine that she doesn't want to see her again. This sends Katherine over the edge into psychotic behavior. She shoots Bobby in J.R.'s office, which leaves him temporarily blinded rather than killing him. She follows up with an unsuccessful attempt to murder Bobby by lethal injection while he is recovering in the hospital. She is arrested for attempted murder, but she is then released on bail and flees to Europe.

Even from afar, the character continues her schemes, arranging for Renaldo Marchetta to be murdered and for Jenna to be framed for the killing. When Jenna is eventually cleared, the fugitive Katherine returns to Dallas and discovers that Bobby and Pam have reconciled. In the finale of season 8, Katherine drives a car toward Pam but Bobby pushes her out of the way and is hit by the car himself. Bobby later dies in hospital. After the impact, Katherine's car had veered out of control and she too was killed. However, in the last scene of the final episode of season 9 (a year later), Pam wakes up one morning and finds Bobby in the shower, alive and well. It becomes clear that the car accident and Bobby's death, as well as the entirety of season 9, was merely a dream that Pam had had. Thus Katherine was actually still alive.

With Katherine's death having been reversed due to the dream revelation, she later makes a brief appearance in season 11 at the bedside of badly-burned Pam, where she declares her jealousy of Pam's stable life. When Bobby also comes to visit, her final attempts to obtain his love are rejected and her threats are met with a commitment to turn her in to the police should she ever attempt to take revenge. This is the last time that Katherine is seen.

Dallas revival (2012–2014)

A new series of Dallas premiered in 2012. Although Katherine never made an appearance, she was mentioned to have died during the intervening years by Bobby in the second season episode "Ewings Unite!", while discussing her mother Rebecca's will.