The cracked padlock icon on his home screen was no longer still. It was pulsing, like a heartbeat.

The phone vibrated once. The cracked padlock icon vanished. The meditation timer was back to three minutes. The photo filters were greyed out. The map showed coffee shops again—and yes, one of them was a trap, but that was his to discover.

He found the app again. The black screen. The single button. But the button didn't say anymore.