There isn't a bad episode in the entire lot. In fact, every episode is good. Very solid...I did not know about 85% of the stuff there. They often set it up like a mystery...there is some weird thing going on and why is it happening? They throw a couple of logical theories, but that isn't it. Then they tell you what it is usually. I have seen lots of the highly rated nature shows and I put this as my favorite of that genre...but it isn't strictly nature like Life or Planet Earth. For some reason this does not get much love. My 7 year old picked this one out on Netflix and I have to say...I really enjoy watching it. Some of the people on the Netflix review board commented on the narrator. He kind of has a talking to kids vibe and it probably is a kids type show. But I really like this show and after every show I watch...I'll be like...man there still hasn't been a lame show yet. I really like this show and I cannot recommend it highly enough if you are interested in weird nature type shows. I conceivably could give it a 10, but I reserve those for Game of Thrones type situations.