Marjorie Kamys Cotera via Texas Tribune

The agency charged with prosecuting state public corruption cases wrapped up an investigation into state Sen. Wendy Davis last year without finding any issues worth pursuing, its director said, and did not uncover anything it believed it should refer to the FBI.

The Public Integrity Unit of the Travis County District Attorneys Office closed an investigation into a complaint made against Davis’ law firm last year. The Dallas Morning News reported Friday that documents related to Davis’ legal work as a lawyer for the North Texas Tollway Authority are part of an FBI inquiry into the agency's board members, citing a letter from the Public Integrity Unit about its own closed investigation into Davis.

For a while in Jamie Meltzer's mesmerizing documentary Informant, I wondered whether subject Brandon Darby, the lefty activist turned FBI informer, was being played by an actor.

But no: It's Darby, and he's a handsome fellow, with haunted eyes blazing out of a bone structure to die for, and with a Montgomery Clift dimple in his chin. Staring straight into the camera, he testifies with the intense calm of a messiah or a madman, which all too often comes to the same thing. Among other things, this powerfully confused man is a study in American extremity.

"Name any high office in federal law enforcement ... odds are Jim Comey's had it over the years."

That's some of what NPR's Carrie Johnson had to say early Thursday on Morning Edition about the man who she has been told, by two sources with knowledge of the decision, will be President Obama's choice to be the next director of the FBI.