I saw this trailer on Youtube a while ago. I remember it vaguely but not exactly. What I do remember is:

• Son is in his 20s and has flashbacks to his mother’s death in a car accident
• Son visits father who doesn’t seem as saddened by the mothers death
• Son begins to investigate how she died and uncovers a secret about his parents (I think it’s that the father had an affair and then the mother actually committed suicide?)

I’ve tried looking it up on Google and can’t find much. I think if you’ve seen the trailer you’ll know what movie I’m talking about.