Mary Crosby Mary Frances Crosby , usually credited as Mary Crosby , is the American actress who played Natima Lang in the episode . She is the daughter of singer and actress Kathryn Crosby . She is also the aunt of actress Denise Crosby ( Natasha Yar ) . Early life and career . Crosby was born in Los Angeles , California . She began acting when she was six years old , appearing in a Bay Area stage production of " Peter Pan " with her mother . She made her television debut when she was eight years old , appearing with her father and Joan Collins in an episode of " The Danny Thomas Hour " . She continued appearing with her father and other family members on a number of Christmas television specials throughout the 1970s . She graduated from high school at the age of 15 and enrolled at the University of Texas at Austin , but dropped out before graduating . She then auditioned for San Francisco ' s American Conservatory Theatre ( ACT ) , becoming the youngest person to be accepted by the repertory at the time . It was while at ACT rehearsing for a production of " Julius Caesar " that , on 14 October 1977 , Crosby learned of her famous father ' s death of a heart attack at the age of 74 . Crosby began acting on television professionally in 1978 , appearing on the hit action / crime dramas " Starsky and Hutch " ( which starred David Soul , in an episode directed by Reza Badiyi ) and " CHiPs " ( starring Robert Pine ) . She also played Patricia North in the 1978 mini - series " Pearl " , which detailed life in Pearl Harbor leading up to its attack by the Japanese and its aftermath . Gregg Henry played her husband , Lt . Col . Doug North ; Charles Lucia and Allan Miller also had roles . In early 1979 , Crosby was a regular on the short - lived NBC series " Brothers and Sisters " . On this series , Crosby played Suzi Cooper , was a member of the Gamma Iota sorority at Larry Krandall College . The college is founded and run by its namesake , played by William Windom . Larry Anderson was also part of the cast . After " Brothers and Sisters " bombed , Crosby found some difficulty in finding another acting job on television . " Dallas " . Crosby is perhaps best remembered for playing the scheming Kristin Shepard on the CBS primetime soap opera " Dallas " . She joined the series in 1979 and remained through 1981 . It was her character who shot J . R . Ewing in the cliffhanger ending of the 1979 - 1980 season ; this revelation came in the November 1980 episode " Who Done It ? " , which was the highest - rated program in television history at the time and remains the second most - watched television episode in the United States . During her time on " Dallas " , Crosby worked with many other " Star Trek " alumni , including Barbara Babcock , Michael Bell , Ellen Bry , Nicolas Coster , Walter Edmiston , Stefan Gierasch , Susan Howard , Leigh J . McCloskey , William Smithers , Paul Sorensen , and Morgan Woodward . Joshua Harris played her character ' s biological son Christopher Ewing on the series . Crosby also played Kristin in a 1980 episode of the " Dallas " spin - off , " Knots Landing " . She returned to the role of Kristin for " Dallas " ' series finale in 1991 , appearing in a " dream " sequence in which J . R . sees what life would be like if he had never been born . The " dream " was presented by an " angel " played by guest star Joel Grey , who ultimately coerced J . R . to ( apparently ) commit suicide by shooting himself . As such , two characters played by " Star Trek " veterans were responsible for J . R . getting shot . After " Dallas " . After leaving " Dallas " , Crosby appeared in a pilot for ABC called " Golden Gate " , in which Crosby , Jean Simmons , and Richard Kiley played members of the Kingsley family . Jason Evers , Don Keefer , Warren Munson , and " Voyager " s Robert Picardo also appeared in the movie . Crosby made her film debut in the 1983 war thriller " Last Plane Out " , for which she reunited with her " Brothers and Sisters " co - star , William Windom . She also appeared with Windom in an episode of " Automan " that same year , along with Robert Lansing , who was a regular on that series . Perhaps Crosby ' s best - known film role is that of Prince Karina in the cult science fiction adventure " The Ice Pirates " . Ron Perlman , Robert Symonds , and Ian Abercrombie had roles in this film , as well . In 1988 , Crosby starred in another cult film , the comedy " Tapeheads " , which also featured Lee Arenberg . Crosby portrayed Isabel Hazard in the epic 1986 mini - series " North and South , Book II " . Her character was the wife of Stanley Hazard , played by " Star Trek : The Next Generation " ' Jonathan Frakes ; her character ' s sister - in - law , Virgilia , was played by actress Kirstie Alley , and her brother - in - law , George , was played by " Voyager " guest actor James Read . Other " Star Trek " alumni who worked on this production include Michael Champion , Jim Metzler , Bumper Robinson , William Schallert , the aforementioned Jean Simmons , Kurtwood Smith , David Ogden Stiers , and Anthony Zerbe . Throughout the 1980s , Crosby made multiple appearances on the television series " The Fall Guy " , " The Love Boat " , and " Hotel " . She also appeared on " Finder of Lost Loves " with Michelle Phillips in 1984 , starred with Joanna Cassidy in the 1985 mini - series " Hollywood Wives " , and appeared with Merritt Butrick in the 1986 TV movie " Stagecoach " . In 1987 , she guest - starred in the series premiere of " The New Adventures of Beans Baxter " , which starred Elinor Donahue and the aforementioned Kurtwood Smith . Crosby continued acting on stage , as well . She played Juliet in a 1985 Los Angeles production of William Shakespeare ' s " Romeo and Juliet " , for which she acted alongside James Cromwell . She returned to the role for another LA production of the play in 1988 , earning praise and a Drama - Logue Award for her performance . She then performed in the Los Angeles Theater Company ' s production of " The Seagull " , which ran from 1988 through 1989 . In 1989 , Crosby filmed two appearances on the horror anthology series " Freddy ' s Nightmares " ( one of which aired in January 1990 ) . In the first episode , " Lucky Stiff " , Crosby and David L . Lander played a married couple ; after Lander ' s character dies , Crosby realizes he purchased a winning lottery ticket , but it may have been buried with him . Tracey Walter played a grave digger who resorts to blackmail to win the woman of his dreams . In the follow - up episode , " Easy Come , Easy Go " , Crosby and Walter ' s characters are married , with Crosby planning to murder Walter . 1990 - 2005 . Crosby appeared in several films during the 1990s . She was seen in four films in 1990 alone , three of which co - starred other " Star Trek " performers : " Deadly Innocents " with John Anderson , " Body Chemistry " with David Kagen , and " Corporate Affairs " with Richard Herd . In 1992 , she worked with Stephen Davies in the action film " The Berlin Conspiracy " . She then starred with Brian Bonsall in the 1993 thriller film " Distant Cousins " . On television , Crosby appeared in two episodes of " Murder , She Wrote " , the first of which was directed by Vincent McEveety and co - starred Gary Lockwood . The second episode again saw Crosby acting with William Windom . They worked together one last time in a 1995 episode of " Burke ' s Law " , along with Michael Nouri and " Deep Space Nine " regular Nana Visitor . Crosby also guest - starred on such television series as " Paradise " ( with David Graf ) , " Lois & Clark : The New Adventures of Superman " ( with Roy Brocksmith , K Callan , Teri Hatcher , Tony Jay , and Tracy Scoggins ) , and " Orleans " ( with Michael Reilly Burke , Jerry Hardin , and J . Patrick McNamara ) . In addition , she played the recurring role of Claudia Van Eyck on the series " Beverly Hills , 90210 " , working with Stanley Kamel . In the 1997 horror film " Cupid " , Crosby and Zach Galligan play two murderous , incestuous siblings . In 2000 , Crosby worked with Lawrence Monoson in the TV movie " Sharing the Secret " . Crosby ' s most recent screen credit was in the 2005 film " The Legend of Zorro " , in which she plays Governor Riley ' s wife . This film was written by Roberto Orci and Alex Kurtzman , who later wrote ' s .