Petunia married a professor, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, introducing strange new opportunities to exploit. And new friends, like Hermione, and Professor McGonagall, and Professor Quirrell.

Petunia married a professor, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, introducing strange new opportunities to exploit. And new friends, like Hermione, and Professor McGonagall, and Professor Quirrell.

Sequel to Serpens Armarem! The Dark Lord has risen, and Harry soon finds out that his absence from Hogwarts doesn't excuse him from the coming war, while back at school Neville realises that not all evil takes the form of Death Eaters. AU, slash