Missed the first season, so I can only tell you about seasons two through five.
They had a different lead, Kevin Kilner, in season one, then in season five, they promoted Jane Heitmeyer (if I remember the spelling correctly) to lead. So, practically speaking, they had three different shows. The latter two were not very good, they were character driven: What drives you to watch the show is a fondness for character(s). In this case, Sandoval, played by Von Flores. Mr. Flores is Filipino, so you will not have seen him, but he makes the show worth watching in seasons two through four. He was apparently too expensive (!) to be full time by season five, but if you like Jane I suppose even it would be tolerable.