Figments

A month after the car accident, a young man named Aaron must recollect and understand what happened. Which he forgot all about the incident, especially his brother's passing. One morning, he's writing in his journal, a day by day intel. His therapist calls him to see how he's holding up, seemingly enough-Aaron is somehow distressed after what he's gone through. Later after the call, he sees someone from that night. Who could it be?