A 'passenger novel' is likely a novel centered around the concept of passengers. It may explore different themes related to being a passenger. It could show the diverse backgrounds of passengers and how they cope with the situation of being in transit. It might also delve into the psychological states of passengers, such as their hopes, fears and expectations during the journey.
The 'passenger novel' could potentially revolve around a character who is a passenger in different aspects of life. Maybe it's about a person traveling through various places, facing different situations, and how these experiences shape them. It could also explore themes like loneliness, adventure, or the search for meaning while being on the move.
I'm not sure specifically as I haven't read it. But generally, it might be about the last passenger on a journey, perhaps on a ship, train or plane. It could involve mystery, adventure or some kind of personal struggle related to being the last one in that particular travel situation.
The 'Dexter' novels, with the 'Dark Passenger' being a key concept in them, are really interesting. Dexter is a unique character, a forensic blood - spatter analyst by day and a serial killer who hunts other killers at night. The 'Dark Passenger' represents his inner urge or the part of him that drives his killer instincts. It's a complex exploration of morality and the human psyche.