You know that TV's Dr. House was a cranky, sarcastic genius because every one of his actions and words proved it over and over. But there's a curious thing in TV where the "genius" character never actually does anything genius, and the "loser" actually has a pretty good life. The character's primary trait exists only in the form of people in the show telling us, despite all evidence to the contrary.
For instance ...
5Dexter Morgan in Dexter Is No Criminal Mastermind
When Dexter was just a boy, his foster father, Harry, realized that, unlike most kids, who pick up hobbies like model building or guitar, Dexter was into pulling the limbs off of people. Harry decides to embrace Dexter's passions by turning him into a weapon for good, instilling in him a set of rules to kill by. Dexter targets criminals who managed to slip through loopholes in the law, presumably because therapy doesn't exist in Miami.
Mass murder isn't a very effective treatment for psychopathy.
Consequently, Dexter grows up to be a serial killer who, by the way, works with the Miami Police Department. He accrues dozens of kills over many years and gets away with every one. While he does make mistakes occasionally, this is a character who has absolutely perfected the art of getting away with murder.
Why This Is Bullshit:
The rules to which Dexter so strictly adheres aren't actually saving him; it's the complete and utter incompetence of the police that allows him the freedom to run around cutting up bad guys. If we look at even the easiest and cleanest of Dexter's kills, he still leaves himself exposed in a handful of ways. To begin, he relies on technology to track his targets; he downloads an absurd amount of protected information from police databases, and in the case of one of the show's most memorable bad guys (the "Trinity Killer," played by a sometimes-naked John Lithgow), Dexter talks to him several times on his cellphone before killing him. Apparently the Miami police don't bother checking up on the phone records when someone disappears.
We like to imagine that the priest from Footloose finally snapped.
Even more troubling is Dexter's incredibly elaborate, time-consuming and evidence-generating method of killing. He doesn't walk up to his victims in an alley and stab them in a way that could be mistaken for a random mugging. He prepares a ritualistic "murder room" full of artifacts from the killer's victims, and covers the walls and surfaces with plastic to prevent any DNA evidence from getting anywhere. He injects his victims with some kind of sedative so he can strap them down.
It's a huge pile of evidence that would nail him if any of it was ever connected to him, either before or after the fact. By covering entire rooms with the plastic, that means he's buying yards and yards of it for each kill. There's a hardware store clerk somewhere who watches a guy buying spools of plastic, face guards, gloves and aprons every week and says nothing about it. He's buying a powerful, injectable sedative from somewhere. Even Dexter's bank is complicit by completely ignoring his charges, which include everything previously mentioned, plus all the knives and instruments of torture he's bought over the years. He's stealing the victim photos, or making copies -- each picture having a direct link to the guy he killed.
"Mr. Morgan, care to explain these charges to 'Injectable Paralytic Agents 'R' Us'?"
And he has to be storing all of this stuff somewhere when he's not using it. Even if it's a storage locker under somebody else's name, he does this so often that there's no way he hasn't been seen coming and going dozens of times.
And once he's done with the kill, now comes the hard part: He has to dispose of all of that stuff. He can't just throw it in a dumpster when it's soaked with forensic evidence. Even if he's bundling them up in garbage bags with the bodies and dumping them into the ocean, those tarps are probably taking up more room than the victims. That means he'd have a lot more trash bags than just the six or seven we usually see him throwing overboard.
"That's it. I need to start composting this shit."
Finally, he's killing most of his victims in the worst possible places. Symbolism is important to Dexter; it's all about the ritual. So, in the final episode of Season 1, he drags his own brother (also a serial killer) to the same place he committed all his murders, which, incidentally, is also an active crime scene. The police know this man is on the loose and that he had murdered heaps of his victims in that very place. The fact that there aren't officers there the entire time that it takes Dexter to drain the blood out of his brother means that the homicide detectives in Miami are abysmal at their jobs.