Prior to acting, Mitchell was often used as a model for
Bruce Weber's fashion photography. From 1989 to 1991, Mitchell appeared on the hit
CBS prime time
soap opera Dallas, as
James Beaumont, the illegitimate first-born son of
J. R. Ewing and his long-ago girlfriend Vanessa Beaumont. He made guest appearances on other series, including
Rags to Riches. He had the title role in the 1988 film
Spike of Bensonhurst and in 1994's
Class of 1999 II: The Substitute. He starred in
Kickboxer 2: The Road Back and the third and fourth installments of the film series. He also appeared in a
3 Musketeers commercial in 1989. His best-known role came on the ABC sitcom
Step by Step, where he played Cody Lambert, the nephew of actor
Patrick Duffy's character Frank Lambert. Duffy had also played the uncle of Mitchell's character on
Dallas. Mitchell's character Cody was based on his personal life experiences. In the early 2000s, Mitchell acted in several films and made guest appearances on
JAG,
NYPD Blue, and
ER. ==Filmography==