Ghost Assassin

What makes a hitman different from a serial killer?

Ghost Assassin is the tale of hitman-for-hire, David. David isn’t like other 
hitmen. He has the ability to see and interact with ghosts. In his eyes there is 
no difference between the living and the dead. But those he has killed do 
not share his viewpoint. Will David’s conscious ever be clean when the sins 
of his crimes literally haunt him?