Mark Landon

WEST HOLLYWOOD, Calif. The adopted son of "Little House on the Prairie" star Michael Landon has been found dead at his West Hollywood home. Los Angeles County sheriff's officials say 60-year-old Mark Landon's body was found Monday. Sgt. David Infante says there is no evidence of foul play. Mark Landon, the oldest of Michael Landon's nine children, has appeared in three movies, including "Us," which was written and directed by his father in 1991. Michael Landon died of cancer later that year at age 54. He also starred in such shows as "Bonanza" and "Highway to Heaven."