Author's Note: Thank-you everyone who followed, favorited, or reviewed on the prologue. I hope this chapter continues to hold your interest.

Disclaimer: I don't own Harry Potter or Percy Jackson. Anything that sounds familiar in this chapter is likely borrowed from Harry Potter, and therefore should be credited to J.K. Rowling.

Chapter 1: The Girl Who Lived-

Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much. They were the last people you'd expect to be involved in anything strange or mysterious, because, at least to the casual observer, they just didn't hold with such nonsense.

Mr. Dursley was the director of a firm called Grunnings, which made drills. He was a big, beefy man with hardly any neck, although he did have a very large mustache. Mrs. Dursley was thin and blonde with large blue eyes, and spent her time performing the large number of tasks and chores that seemed to accumulate when one was a stay at home mother. The Dursleys had a small son called Dudley and in their opinion there was no finer boy anywhere.

Mr. Dursley had everything he wanted, but he also had a secret, and Mr. Dursley's greatest fear was that somebody would discover it. He didn't think they could bear it if anyone found out about the Potters. Mrs. Potter was Mrs. Dursley's sister, but he hadn't had the misfortune of her presence for at least a year—since that unnatural and disgraceful wedding. Mr. Dursley shuddered to think what the neighbors would say if the Potters arrived in the street. The Dursleys knew that the Potters had a small child, too, but they had never even seen her. This girl was another good reason for keeping the Potters away; he didn't want Dudley mixing with a child like that.

When Mr. and Mrs. Dursley woke up on the dull, gray Tuesday our story starts, there was nothing about the cloudy sky outside to suggest that strange and mysterious things would soon be happening all over the country. Mr. Dursley hummed as he picked out his most boring tie for work, and Mrs. Dursley kept up a steady stream of nervous gossip that she tried to make sound cheerful as she wrestled a screaming Dudley into his high chair.

None of them noticed a large, tawny owl flutter past the window.

At half past eight, Mr. Dursley picked up his briefcase, pecked Mrs. Dursley on the cheek, and tried to kiss Dudley good-bye but missed, because Dudley was now having a tantrum and throwing his cereal at the walls. "Little tyke," chortled Mr. Dursley as he left the house. He got into his car and backed out of number four's drive.

As soon as he had vanished down the road, Mrs. Dursley relaxed considerably, and perhaps sensing that she was now calm, Dudley's temper tantrum wound down to a few pitiful sniffles. Mrs. Dursley made quick work of the rest of breakfast, and while Dudley was calm, left him occupied with a toy in his high-chair as she quickly cleaned the kitchen.

Making a quick to-do list, she bundled Dudley up into his stroller and they made their way down the road to the nearest supermarket. It wasn't until they were on their way back home, Dudley asleep in the stroller, that she first noticed something strange. There were a lot of people wearing cloaks gathered in groups whispering together excitedly. It set her on edge though she wasn't sure exactly why, other than the fact that her goddess given intuition was telling her that it involved Lily. Her suspicions only increased upon noticing the owls soaring overhead. But the final nail in the coffin was when she passed close enough to make out some of the conversation from one of the groups.

"The Potters, yes, that's what I heard. Extraordinary! Their daughter, Cressa, yes…"

She was filled with a deep sense of foreboding as the group moved on, and practically ran back home where she only paused long enough to put Dudley in his crib and hurriedly put away the groceries before picking up the phone and making an international call.

However, Sally was just as clueless as her; neither of them having heard a thing from Lily since shortly after the wedding when they received a short notice that Lily and James were going into hiding, so contact may be rare. Promising to call if she received news, Petunia put up the phone and struggled to go about the rest of her day normally.

She was taken by surprise when Mr. Dursley finally returned home, and struggled to pull herself together in time to face him. She prattled mindlessly over dinner and was relieved when she could finally escape to put Dudley to bed. She took her time making their evening tea but was blindsided when he asked, "Er—Petunia, dear—you haven't heard from your sister lately, have you?"

She froze, was this some sort of test? Finally she simply said, "No," before curiosity overcame her and against her better judgement she added, "Why?"

"Funny stuff on the news," Mr. Dursley mumbled. "Owls... shooting stars... and there were a lot of funny-looking people in town today..."

"So?" snapped Mrs. Dursley, starting to become angry.

"Well, I just thought... maybe... it was something to do with... you know... her crowd."

Mrs. Dursley sipped her tea through pursed lips, as Mr. Dursley continued, "Their daughter— she'd be about Dudley's age now, wouldn't she?"

"I suppose so," said Mrs. Dursley stiffly.

"What's her name again? Cassie, isn't it?"

"Cressa."

"Oh, yes," said Mr. Dursley. He didn't say another word on the subject as they went upstairs to bed. Petunia, exhausted mentally from her day managed to fall asleep quickly, not knowing that come the morning her entire life would change, that her world would come crashing down, that a young girl was even now being brought to her doorstep, that wizards and witches around the world were raising their glasses to Cressa Potter—The-Girl-Who-Lived.

Dear Mr. and Mrs. Dursley

I am sorry to have to inform you of the passing of Lily and James Potter on October 31st at the hands of the Dark Lord Voldemort. No-one can be certain of what transpired in that house, but Voldemort was banished upon presumably turning his wand on your niece. There are few if any magics that can stand up to the killing curse, and my best guess as to how Cressa survived is that Lily Potter, in order to protect her daughter, offered up her life instead and through her love created a sort of shield that protected Cressa from the killing curse, causing it to rebound upon Voldemort and leave her with only a small scar. With this in mind, I have taken advantage of your blood bond to Lily to create a ward tied to Cressa so that as long as she calls the house of her mother's blood relative home, she will be safe from Voldemort and his followers at least until she comes of age. This ward will also serve to protect you and your family, as long as it is recharged for at the very least 2 weeks a year, though the longer she resides there the stronger it will become. With the passing of Lily and James both, you were next in line along with her godfather, but as he is currently under suspicion for betrayal, the duty has fallen to you. I am sorry once more for being the bearer of bad news, and hope that you will find it in your hearts to love Cressa as your own.

Regretfully-

Albus Dumbledore

Headmaster of Hogwarts

Author's Note: Thank-you all for reading. Hope you enjoyed.