Another great show in the Netherlands is Who Is The Mole? It isn't a drama show, but a celebrity "spy" show. I'm surprised it hasn't been re-created abroad. The premise of the show is that you have 10 contestants with one being undercover (The Mole). Every episode the contestants have 2 challenges that will win money for the pot. It's the Mole's job to sabotage the challenge without being found out. At the end of each show you have a test of 20 questions and whoever has the least correct anwsers gets sent home. Each season the show is set in a foreign country, they've had Japan, USA, Chile, etc.
The twist, and what makes the show work, is that because nobody knows who The Mole is, they start to also sabotage the challenges to make themselves look suspect, thereby confusing the other contestants and increasing their own chances. What happens is that the first couple of episodes people are reasonably friendly and open, but then the psycological warfare starts (in a nice way, people don't get vicious) with the contestants lying, manipulating and playing tricks to confuse each other. It's really amusing, but at the same time the viewer (and contestants) don't know who the Mole is. The past few seasons it hasn't been till the final, or semi-final that I've known, or been pretty sure, who the Mole was.
It's the only "reality" show I watch. It's also amusing seeing some of the more wholesome dutch celebrities becoming conining and manipulative to win the show.
To keep the secret, everyone working on the show has a clause in their contract that if they say who the mole is they get fined 250.000euro. The winner usually never gets above 20.000e to put in in perspective. So in the UK and US it would need to be +1mil to work imo.