When Dumbledore left young Harry Potter on the steps of his aunt and uncle, he left only with the thoughts of a malleable and weak child ready to be molded into the perfect pawn. I suppose even the greatest of wizards can be blinded by arrogance, and in this case, it might just be his greatest downfall.
On the night of Lily and James's death, it was not Dumbledore who found and collected Harry. It was Severus. Choosing to Raise the boy as his own, Severus immediately takes the child to Gringotts to gain custody, keeping the child out of the meddling old headmasters clutches. How will the child turn out in the household of our favorite potions master?