After she hears about James Potter's car crash that summer, Lily expects to see him around campus when her sophomore year starts in August. And it's not a surprise that when she first spots him, he's with Sirius Black. What is a surprise is that James isn't just hanging around him – from what she can tell, the two are full-on hanging out. Which, normally, would make sense, except James's car crash? It was fatal. So if Sirius is laughing at something hilarious James is saying, like it certainly seems like he is – well, then Lily isn't the only student at H.W. University who can see ghosts after all.