Lily's Son

Harry Potter saved Vernon Dursley's life as a child with magic, how different would that alter how he was raised? With his mothers determination and looks (red hair included) perhaps his time at Hogwarts would be vastly different. Petunia tells him everything she knows, and gives him the letter from Dumbledore and ends up sorted into Slytherin. He makes friends with people in all four houses changing quite a few fates in the process.