I think there's something really special about a show that is capable of mantaining its mystery after so many episodes (I haven't watched all of it yet, but I'm well into the third season), while still moving the plot. And because mystery is the whole theme and thesis of the story, that's extremely important. Now, I find the amount of references to real-life enigmas, people and events a bit on the nose sometimes, a bit funny, but at the same time it works, because of Tanis's (the thing, not the show) own nature.One thing that really does bother me is the unnecesarily and unnaturally cryptic way everyone speaks. Nobody can ever give an answer straight, but instead have to engage in a pointless back-and-forth of non-answers until they finally say the thing. It's not cute, it's infuriating.Still, I think the concept is good and the mystery works, plus the performances are good all around, so I'm giving it four stars.