The serial killer at dawn

Previously

…"What something?" She shook her head. "That's for you to find out. But be careful, Trevor. The truth you're chasing might destroy you." Before he could ask more, she melted back into the shadows, leaving him alone with the key and the shard and the weight of two dead women pressing down on his shoulders. Trevor looked up at the sky, the clouds parting to reveal a sliver of moon. Tomorrow. Midnight. The observatory. He had twenty-two hours to prepare. Twenty-two hours to decide if he was walking into a trap or toward the truth. Either way, he wasn't going alone. Not really. He had Evelyn's note. He had the shard. He had the key. And he had a killer who wanted to play. Game on.