Touching Evil, on USA Network
IMDb; Wikipedia

Based on a British series (which I never saw). This FBI agent, David Creegan, was shot and was critically dead for a few minutes, and lost part of his brain, but survived. He took a leave of absence for a year, but now he's back at work, in the FBI's Organized and Serial Crime Unit (OSC). He's lost various faculties, such as a sense of shame, but he's still brilliant at his job. Just not great at following all the rules. He's also divorced and has a couple of kids. He's been teamed with Detective Susan Branca (Vera Farmiga). She's not particularly pleased at having to work with him, at first. It's supposed to be a sort of Mulder and Scully (The X-Files) type relationship, I guess. Dunno what else to say right now, but while I liked it at first, my interest eventually waned a bit, and now I don't remember it well at all.