Larson began his television writing career in the 1960s with an episode ofThe Fugitive. He went on to create Knight Rider, Manimal, The Fall Guy, Quincy M.E., Cover Up and Buck Rogers in the 25th Century. He earned three Emmy nominations for his work on the limited series McCloud andQuincy M.E.
Before he began writing, Larson was in the 1950s pop group The Four Preps. He used his musical experience to compose many of the theme songs for his shows.
Larson is survived by his wife Jeannie, brother Kenneth and nine children.