Question about Sirius

[colebiancardi]

Paul W <wootshanks at ...> wrote:
>
> I don't know if you're reading fanfic or if I'm missing something.
> 
> First question to Missy...who is Nick?

colebiancardi:  I'm not Missy, but Nick is Headless Nick - the ghost.
 In the books, Harry asks Nick about why some wizards come back as
ghosts.  He is trying to find out if Sirius will come back as one. 
Nick explains that most wizards do not come back as ghosts, but why he
did was because he was afraid (or something like that - I don't have
my books in front of me)