There's probably about 5-10 minutes of interesting information in this history series. Most of your time is wasted context switching between different theories and "base camp" which is supposedly making the decisions where to investigate next. It's all so fake.
The investigators make giant assumptions based on little or no evidence and use hyperbole to support their decisions.
You will find out information from this series but it's so dumbed down and reformatted for commercial television it will drive you crazy.