Stephen J. Cannell

Prolific writer and producer Stephen J. Cannell, who created such shows as The Rockford Files and The A-Team, has died. He was 69.

Cannell died from complications associated with melanoma in his Pasadena, Calif., home on Thursday, The Associated Press reports.

Cannell got his start as a story editor on the cop drama Adam-12. He went on to create and co-create nearly 40 television series, including The Rockford Files, The A-Team, 21 Jump Street and The Commish.

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In recent years, Cannell turned his focus from television to novels and published 16 books.

The Los Angeles native was also an occasional actor and had a recurring role on ABC's Castle.

Cannell was married to his high school sweetheart, Marcia. The couple had two daughters, Tawnia and Chelsea, and a son, Cody. Their firsborn, Derek, died at the age of 15 in 1981.