I gotta say, I loved the whole Criminal Minds series. The series flows well from episode to episode, and although it follows the same predictable format being: Murder spree > Profile the UnSub > Arrest the wrong person > Someone else goes missing > Race against the clock to save person from the real UnSub, it does it in a way that engages you.
I'd seriously recommend it, if you have the patience to watch all 5(?) series, you will be well rewarded.
There is always a backstory behind the episodes, and the troubles and tribulations of each of the profilers is a constant undercurrent throughout the series.