A doctor, a lawyer and a priest are sharing a compartment in a night train, enjoying some casual conversation along the way. Their order is disrupted by a fourth passenger in the same compartment, who was present at the doctor's latest lecture, and tells them a personal but also related story of growing up, dual personalities, and possible murder. His story is quite absorbing, and his small audience, as well as the bigger one watching this movie, is carried along, trying to guess where it's going. When it arrives at its destination, the nature of the story is left ambiguous: is it about supernatural "possession"? A strong personality dominating a weak one? A girl with excellent acting abilities that has been fooling everyone? This is yet another Agatha Christie tale which shows how ahead of her time she was in many ways, like her questioning and challenging of the "established" authorities in both the religious and the scientific fields. Exceptionally well-cast, unusual and haunting episode. *** out of 4.
Review of The Fourth Man
