From the small bit I can remember, the main character (male) starts working in a corporate setting. He is ruthless in taking down people in his way.
I remember a scene in which it shows the main character as a kid and he's in a cardboard box, and then it shows a logo on the box and switches to show the logo on some trains passing by in the night. The grown up main character is then shown to be working at that company.
I also remember a scene where the main character needs to get by a lie detector where he was being questioned about someones murder and it showed him putting a push pin in his shoe and stepping down on it so it messed with the readings and he got through.
I only remember a couple episodes but I was pretty young and was busy with sports but it seemed to only be on a short time.