This story came to mind because I find that James' actions at the WSM did not really have any consequences. I decided to continue with the point of view of Lily, Snape, Sirius, Remus, as well as other characters (always in the same theme: consequent and redemption).

He always sat there, just staring out the window. The nameless man with sad eyes. He bothered no one, and no one bothered him. Until now, that is. Abigail Waters knew her curiosity would one day be the death of her...but not today. Today it would give her life instead.