There's not much to go on

[pippin_999]

--- In the_old_crowd at yahoogroups.com, Magda Grantwich
<mgrantwich at y...> wrote:
> > Kneasy:
> > The actions of the DEs should be a clue, but I'm damned if I can 
> > suss it out. The story is that they expected the Longbottoms to 
> > know what had happened to Voldy, yet the morning after GH  the 
> > entire WW was talking about nothing else. What else was there to 
> > know? The Potters were dead, Voldy had gone down, defeated by a 
> > burbling infant. Why confront the Longbottoms? What could Frank 
> > and Alice possibly tell them that everybody else wasn't talking 
> > about?
> 

Pippin:
Everybody thought (or hoped) Voldemort was gone for good except
the Pensieve Four --they trusted his immortality spells had worked 
and they believed he must be still alive somewhere. 'They alone
tried to find me."

Magda: 
> Personally I think the whole Longbottom attack was Lucius Malfoy's
 diabolical attempt to get his nutcluster sister-in-law and her
limpet husband out of Malfoy Manor because it was getting crowded 
around the dining room table.  

Pippin:
Nope. It was ESE!Lupin's plan to get the only DE's who knew Sirius
hadn't betrayed the Potters into Azkaban. He knew that  the only 
thing that would  make them risk blowing their cover was information 
that the Longbottoms  knew what had become of their master.  
Who else but the real spy in the Order could have persuaded them?

Then, of course, Lupin tipped off the Order, who arrived a little
too late to save the Longbottoms.

Pippin