Chris Steinbrunner, an expert on mystery in films, radio and television, died July 7 of a heart attack.

He was 59.

Steinbrunner, a longtime executive at WOR-TV, now WWOR-TV, was the co-editor of “Encyclopedia of Mystery and Detection.” The book, published in 1976, won Steinbrunner and co-editor Otto Penzler the Mystery Writers of America’s Edgar Award.

Steinbrunner was the author of other books, including “Detectionary” in 1974 and “The Films of Sherlock Holmes” in 1978.

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