Who are you really?

A well known detective in the area is often given odd assignments to look into. It's his speciality to solve cases that don't seem to be very 'normal'. After the loss of his last living family member he isolated himself from everyone including his loving girlfriend who continues to worry and care for him. He has a gift for dealing with the not 'normal' things that occur in certain cases though he doesn't seem to notice himself. He has the ability to see the paranormal and repel evil creatures such as demons and monsters. As great of a skill this is is puts his own life and those he cares about in more danger. After one case that is extremely brutal and twist in every direction he is protected by a demon huntress, hunter, and their angelic friend. They help him to solve his case and discover there is much more evil to this than a simple evil possession. The world is in danger and they need all the help they can get to defend the world from these dark forces. This path is deadly but there aren't many who can even see the paranormal. The weight on the detectives shoulders continue to grow can he handle what this world and the next will throw at him? Who will survive this dark horror story and the mess it makes of everyone's live? Who are you really? Who will you be able to protect?