SPF 45: Prologue

A/N: haven't written in a while! Sorry if it's more than a little rough...haha.

Casey and Derek had a strange relationship. At first glance, they appeared to be no more than your average on-the-verge-of-hating-each-other pair of siblings. But, as with a lot of things, it was much more than meets the eye…

Neither of them would have ever admitted to the truth if it hadn't been for those two fateful weeks in California. That summer changed everything.