“Mr. William, there’s something unusual about the video,” said a deep voice from a man in a black suit. The room was dark, filled with surveillance monitors and digital files.

William stood behind him, fists clenched, jaw tight. Disappointment still lingered, but in his eyes now was something else—unease he could no longer ignore.

“What do you mean?” he asked sharply.

The security analyst zoomed in on a still frame from the video that had been emailed to William a week ago—the one showing Evelyn and Julian in the hotel room. But this time, the screen revealed a detail that had gone unnoticed.

“Here,” the man pointed. “There’s a hidden...