Let me say first that when I watched the first three episodes from Season 1, I dropped it due to my own disability; I have a hard time remembering names. This series has the most main characters of anything I have ever watched. Plus, the fact that this show has voice-over in English (filmed in German) irked me. However, 2 months later, my curiosity got the best of me and I continued, resenting the fact that this series was like a college course I had to study for due to it's complexity. I found the effort very rewarding. Very well written, directed and produced; intriguing, and fast pace yet emotionally engrossing. Do not fear that this is just a science fiction series - it is not. It is a fully rewarding experience.