"I was here before," Cassie echoed, her eyes wide. "But... I don't... I've never..."

Surely, she'd remember being here before. Could this be another joke? No, probably not. Not with the way Marco was watching her. Could he be mistaken? It was possible as even someone as smart as Marco could be mistaken, but not likely unless someone had actually been messing with his memories- An imposter wouldn't have lasted long among her friends, after all. So then, what had happened?