“You think they became sirens because they angered the gods?” Harper asked, and he nodded. “But Gemma didn’t anger any gods.” Then she changed her mind and shook her head. “At least, I don’t think she did.”

“I don’t think she did, either,” Alex agreed. “So maybe she isn’t one.”

Harper thought back to the end of the other night, when she’d seen Gemma disappear into the ocean in the pale pink light of early morning. Even then, her tail had been unmistakable. Gemma had definitely had a mermaid form.

“No, she’s one of them,” Harper said definitively. “And it doesn’t really matter to me why or how she became one. I just need to know how to get her back.”

“That’s the tricky part.” Alex grimaced. “I haven’t read about any way to undo their curse. Only how to kill them.”

“Well, we don’t want to kill Gemma, but I wouldn’t mind killing those other bitches,” Harper said, a little surprised by the vengeance in her own voice. “How do we do that?”

“I don’t know exactly. Apparently, the sirens are fated to die if someone hears their song and escapes it,” Alex said with a sheepish expression on his face.

“But you heard the song, and so did I, and we escaped it,” Harper said. “And they didn’t die.”

“That’s the only thing I’ve read so far,” Alex said. “But according to what I read in Homer’s Odyssey, the sirens should already be dead.”

“Great,” Harper muttered. “So basically what you’re saying is that you don’t know much more than I do?”

“Not really, I guess,” he said. “But at least I figured out what they are.”

“That’s a start,” Harper admitted grudgingly, and picked up a book off the floor.

With no better plan, Harper and Alex were left researching everything they could on sirens. As they went through the books, they spoke very little to each other. They were both too focused on figuring out how to rescue Gemma.

Harper wasn’t sure exactly how long they’d been sitting there reading, but she’d had to change positions because her legs had gone numb. She sat with her back resting against the shelf behind her, the copy of Argonautica spread out across her knees.

Even Alex had moved, probably for the same reason. He lay on his belly with the book open before him. His fingers were buried in his dark hair, and his handsome features were hardened in concentration.

Harper glanced up from her book and caught sight of him. Something about the intensity of his expression moved her. His devotion to Gemma nearly rivaled her own, and that made her feel a bit better. She wasn’t in this alone.