Reaper

Reaper is an American television series that focuses on Sam Oliver, a “reaper” who works for the Devil by retrieving souls that have escaped from Hell. The series originally ran on The CW from September 25, 2007 to May 26, 2009. Wikipedia
First episode: September 25, 2007
Final episode: May 26, 2009
Network: The CW Television Network
Program creators: Michele Fazekas, Tara Butters
Writers: Alan Cross, Chris Black, Kevin Etten, Thomas Schnauz, More