Do we really live only within what we can see and hear,
or does that belief limit how we see the world?
The Unseen moves from unusual presences to the limits of the senses,
the pineal gland, states of consciousness, and other forms of perception.
From science and esoteric traditions to New Age and conspiracy theories,
the same phenomenon can lead to very different explanations. The series
keeps each one tied to its source without using one side to prove the other.