From the Paramount and Warner Bros. feature film “Zodiac”—San Francisco Chronicle reporter Duffy Jennings (right), as played by Adam Goldberg, with SFPD Homicide Inspector Dave Toschi, as played by Mark Ruffalo. As long as he...

When David Fincher’s film, “Zodiac,” based on the book by former Chronicle editorial cartoonist Robert Graysmith, opened in February 2007, the newspaper asked me to write about the mood inside the Chronicle during the...