Settings

Luther is set in London big city, but the rough part of estates so the show will be darker and bit more twisted .This makes it feel more scary and real-alistic which means you've got reasons for deserted council estates, high rised buildings, tower blocks, alley ways and on the Thems so boats can be involved. This is all stereo-typical for London so people will connect as it seems more realistic rather then CSI.

Compared to CSI, Miami is all about holiday, sun, very glamourous, always pretty and the suns out. This is more of a fantasy compared to Luther. With CSI, they use huge houses and gorgeous people in each different episodes. You NEVER see anything bloody or dark. The neighbour streets always look perfect. This might be more hard to work out the suspect as every one is set out to be good looking people.
Criminal Minds and CSI are really alike as they have the same settings.

Sherlock is in a part of London that everyone will realise, Baker Street. As sherlock has a flat in the middle of London, you can tell he must have a lot of money even though he doesn't have a job. This bit is the posh part of London but in Sherlock, all parts of London is shown as some parts are grotty compared to others. More glamorous then Luther. By Sherlock using a  violin it shows he is upper class and he always uses taxi's to get places.