After acting in dinner theater shows throughout Washington, D. C., in the summer of 1972 Jameson Parker moved to New York City where he soon began appearing regularly in television commercials and off-Broadway plays. He received his first big break in 1975 when he was cast as Dale Robinson in the daytime soap opera, "Somerset" and later went on to have a recurring role in "One Life to Live." In 1979 Parker made his film debut in the biographical drama, "The Bell Jar," before acting in a series of made-for-TV movies throughout the early '80s, including "A Caribbean Mystery," "Anatomy of a Seduction," and "The Gathering, Part II." Parker's breakout role came in 1981 when he was cast as ''A.J.'' Simon in the Emmy-nominated action series, "Simon & Simon." The show, about two disparate brothers who own a private detective agency, ran for eight seasons on CBS, and made Parker a household name. After "Simon & Simon," Parker continued to act, primarily in television. During the '90s he had guest-starring roles on both comedies like "Major Dad," and dramas such as "Murder, She Wrote," and even reprised his role as ''A.J''. Simon in the 1995 made-for-TV movie, "Simon & Simon: In Trouble Again."