Vigilante

Two concepts here:

First, target dishonest businesses.

Local TV stations often have occasional "investigative journalism" segments where they expose a dishonest business, like an auto repair shop or a plumber. For example, they'll take a car that works fine, mount hidden cameras all over, bring it in for a problem that doesn't exist, and catch the mechanic breaking things or charging for services they didn't do. There's enough demand for this type of content to warrant a regular program.

There are a lot of businesses that thrive on the fact that their customers are clueless. This show would serve to educate consumers on how various businesses can take advantage of them and how they can avoid the problems.

It would also create a deterrence which does not exist today. Most consumers aren't able to spot the problems or prove their cases, and so few dishonest merchants will ever go to jail. Knowing that there is someone out there who is actively looking for cheaters can make dishonest business people think twice.

The targeted businesses in the first season might include: auto repair shops, HVAC repair, plumbers, camera stores, taxis, and movers. The businesses themselves can be small businesses or large corporations.

Crimes to expose might include: performing unnecessary repairs, charging for services not performed, over charging, racial bias, false advertising, and illegal questions in a job interview,

Second, target street criminals. Car thieves, pickpockets, muggers, rapists, vandals - they're all worth targeting.

Park a BMW in a lot that has experienced many car thefts or break-ins. Put hidden cameras and a GPS system inside the car, and place multiple super-zoom video cameras in the vicinity. Hire a college student to monitor a dozen cars in a dozen locations.

Get a guy to walk around a notorious neighborhood with something valuable sticking out of his backpack, and follow him with hidden cameras.

Video footage captured for TV can be used to prosecute the crimes. This will get criminals off the street (by arresting them) and will create a deterrence.

These shows can be licensed for local versions - CrimeFighters NY, CrimeFighters London, etc.