Answer:
Yes.
Step-by-step explanation:
Typically when reading any piece of writing, you would expect the narrator to tell the truth because it's from their viewpoint. It also can depend on what point of view is being used. If it's focusing on a character thoughts it would be the truth to them, however, you wouldn't be able to know how it looked through the other character's views. If the narrator is in third person then they are spectating everything, so then everything would be true.