Stories and the Truth

How can one know that the stories people tell are the whole truth and nothing but the truth? This is one of the questions that operates on every level of the narrative starting with the story Nick is telling the reader. When her story starts, she leads readers to believe that Corrine was her best friend and that she is upset that Annaleise is missing. She also leads readers to believe that she loves Everett as she has agreed to marry him. Yet, readers soon discover that she has also been sleeping with Tyler when she comes back to Cooley Ridge. Daniel does not even know this as he tries to get Tyler to leave her alone. Nic does not lose the engagement ring as she implies. Annaleise takes it, and while Nic does not kill Annaleise she is not looking for Annaleise...