“That door leads to the tunnel off the island,” Gretchen said from behind him. She stepped next to him and pointed to the fire door. He didn’t know where she’d come from, if she had caught up with him again or if she had been there all along. She smiled at him. “But Jack lent me a key.”

Archie struggled to understand—he had Jack’s keys. He grasped for them in his jacket pocket with his bloody hand. But Gretchen stopped him, holding up a brass key of her own.

“I took the master,” she explained. “Jack was kind enough to point it out to me.”

She’d slaughtered Jack for that key. But why? Then it hit him. “You locked the door,” Archie said. She had sealed Karim’s only escape off the island. They had him trapped.

She leaned across the doorway close to his ear. “The first door,” she whispered in his ear. “That’s where Karim has Susan.” She directed him to look where she was pointing. “Can you see it?”

Archie peered down the hall at the first door. His vision was spotty. But when he concentrated, the door came into focus and Archie saw that it was very slightly ajar.

He could do this.

He could get to her.

Karim was cornered.