When did Snape attempt to save the Potters? WAS: Re: Harry IS Snape.

[potioncat]

No: HPFGUIDX 141247

> Chys:
> 
> But WHY did Snape tell Voldemort in the first place? Am I to 
believe 
> that he owed James a life-debt? Ok, then why did he give his 
> information to Voldemort anyway- the prophecy, or was that because 
> they didn't know it was his (James's) family specifically yet? If 
> there was even a possibility that it could be his family, then 
Snape 
> should have kept quiet due to the debt. 

Potioncat:
Snape was a DE and he heard information that would help LV. I'm not 
sure if he was already applying for a job (at LV's orders), if he was 
already trying to return to DD (and was recruited) or if he was 
spying on DD and Trelawney for some other reason.

But, he took information back to LV. If I'm correct, it would have 
been too early to know who the prophecy was about. (I think the 
pregnacies would not yet be public knowledge.)

The fact that DD says the eavesdropper was in LV's employ, makes me 
wonder if DD and Snape weren't already planting information. However 
timelines aren't my strength, and I may be wrong about that one.

How would anyone feel, if DD had planted that information via Snape? 
Would that make DD responsible for James's and Lily's deaths?