One of the characters of the show is the dead father of the protagonist (Ben Fraser). In several episodes we see Fraser and his father together, speaking quietly. And the dead father stays with his son during his adventures through the end of the series.
Apart some of the old energy beliefs about death and the transition of the soul, there are some good ideas such as: the relationship between Ben Fraser and his dead father essence, lived in total harmony, as if it is a normal thing. For me, it means to see death in a different perspective, without the usual drama ...
And then, just at the end of course, we can understand why the essence of the dead father remains close to his son, or rather, why he remains attached to the Earth. This is a good starting point, because some souls don't take (or not take immediately) their journey because there are stuck or they have beliefs that keep them in the Earthbound realms. Normally these blocks come from pain, anger, despair ... In the series, we see that, once the "block" is dissolved, the soul of the dead father takes his journey.
If you're curious, you can watch the series on internet, even on youtube.