Blood Runs Deep (Percy Jackson)

REYNA had been running away from the past she had never remembered. Her sister, Hylla, who looked like her, but Reyna had always thought about the traits that weren't like her mother, sister, or father. Her family was hiding a secret from her. And a big one, too. LEO ran away from all he knew, after he killed his mother in the accident that he'd created. Now, it's coming back to haunt him, but why does he see a girl with his mother? All these events don't trace back to his memories. But what happened that made him forget?