O.K, I actually haven't seen the whole series, but from the one one season I've seen this is the best mystery TV series ever made, and its writers' ability to invent new mysterious situations all the time makes them, in my opinion, to the modern version of Agatha Christie. In addition, the writers succeed keeping the series' special sense of humor even in the most thrilling scenes. I've never heard of someone that could figure the mysteries out by himself before Jonathan and Maddy reached the real solution. A breathtaking original series! The best one by the BBC SELECT! Absolutely a Must-See!