Sword of Avalon — Anastasia D'Andra

They were orphaned on the same night, in the same place, by the same woman; but for eighteen years, Dominic Goodard and Esmerelda Anderson knew nothing about each other. When an influential school calls them to its ancient walls, they are once again reunited. Their fates become intertwined even more as an old enemy reappears. They must find a powerful artifact before she does or all is lost. With the help of their friends, Quentin Yorke and Miranda Stuart, they begin their search. When one of them is nearly killed, the other three are forced to face the fact they may not succeed. And if they do, how many of them will survive?