Oooh, if we get to have guesses, my guess is Snape. My guess will be that Snape went there to warn Lily and James of voldemorts plans since Snape was a DE and all, it may be at that point when he learns Voldemort is going to kill a baby that Snape realizes he's made the wrong decision to be a DE. So he goes there to warn James and Lily that Voldemort is on his way but before they manage to escape Voldemort shows up (Snape apparently manages to hide from him). That's my little theory!
If that theory is even remotely correct, then that could be the very reason Dd trusts snape so much. Snape went there to protect them but moreso, to protect their inocent child, which we all know as HP. Oooh, I'm loving this little theory
![:razz:](./images/smilies/razz.gif)