I do understand why "profilers" love to do shows like these- it helps perpetuate their cushy job and healthy paychecks rolling in. Much like a psychic, they point out the painfully obvious, then make broad sweeping predictions and hedge their bets against the inevitable inaccuracy. No better than any decent detective, but they cost taxpayers a bundle extra.
Suffer through the first episode if you must. You'll learn that simple, straight-forward basic police work and common sense found the murderer. Correlating lists, doing the legwork. The profiler shoveled a lot of manure, and made himself look busy.
Profiling has been the subject of more than one university study. Most conclude that profilers offer no better results than regular cops who plug a few simple variables into a chart. The rest of the 'nuanced' analysis is just guesswork. Every murderer has some patterns. However, just like the rest of us, they have loads of contradictions and many features of their lives are far from expected defying any ration analysis or prediction.
Remember the BTK killer a while back? The FBI had him pegged as an antisocial loner, not connected to anyone, moved alot, changed jobs alot, etc. OOOOPS. Married, kids, stable job, and of course, a pillar of his church.
Profiling is even less likely to correctly identify a suspect when killers are female, or children as there is very little in the data pool.