Marjorie Ellen Mahoney Dusay (; née Mahoney; February 20, 1936 – January 28, 2020) was an American actress known for her roles on American soap operas. She was especially known for her role as Alexandra Spaulding on Guiding Light, a role she played on and off from 1993 through the show's 2009 cancellation, as well as Jean MacArthur Faircloth, the wife of Douglas MacArthur, in the 1977 movie MacArthur. Career In 1967, Dusay was a member of the Session, an improvisational comedy group in Los Angeles. Her dramatic debut occurred December 21, 1967, in an episode of television's Cimarron Strip. She appeared in the film Sweet November (1968). Dusay started her career with a small role as a waitress alongside Elvis Presley in the film Clambake in 1967. In 1968, Dusay played a special agent in the TV series Hawaii Five-O, in an episode titled "Twenty-Four Karat Kill". In 1969, Dusay played a woman who agrees to testify against a mobster in "The Singapore File", as well as appearing three times as seductive temptresses on Hogan's Heroes. In 1968-69 she played Gloria in the CBS comedy Blondie. She made numerous guest appearances on popular television shows in the late 1960s and 1970s. She played alien Kara in "Spock's Brain", the first episode of season three of Star Trek. In it, Dusay delivered arguably one of the most memorable lines of the original Star Trek: "Brain and brain—what is brain?!" She was a popular guest at Star Trek fan conventions, often appearing with personal friend and fellow Star Trek actor Michael Dante. She appeared on Daniel Boone in its 1969 episode "Benvenuto... Who?" as a beautiful French diamond thief named Eugenie. She starred as Jean MacArthur in the 1977 film MacArthur, and guest-starred as Blair Warner's mother, Monica Warner, on The Facts of Life. In 1982, she appeared as Kate Hanrahan, a madam/con artist, in several episodes of Bret Maverick, in 1982-1983, she portrayed Beverly Tepperman in Square Pegs, and in 1979 she was Jennifer in Stop Susan Williams. Already an established actress when she began her long career on daytime TV, she made her soap debut in April 1983, replacing Carolyn Jones as the powerful Washington, DC, matriarch Myrna Clegg on Capitol, which she played through the final episode in March 1987. As the rival of the kindly Clarissa McCandless (Constance Towers), she had a part in practically every storyline,