Detective Thomas Vance stared at the spotless kitchen floor, completely baffled. The victim, a wealthy tech investor named Arthur Pendelton, sat upright in his favorite leather armchair, deceased for less than two hours. The coroner had already confirmed the cause of death: acute cardiac arrest, brought on by a highly sophisticated, untraceable toxin.
Yet, there was no entry wound. No puncture marks on the skin. No unusual substances in the half-empty glass of scotch on the side table.
Vance walked a slow lap around the room, his eyes scanning for anything out of place. Arthur’s house was a fortress of modern security. The state-of-the-art smart system recorded every door opening, every window vibration, and every motion sensor sweep. Vance had already checked the digital logs thrice. According to the data, no one had entered or exited the estate in the last forty-eight hours.
The security cameras covering the perimeter showed nothing but falling rain and empty lawns. It was a locked-room mystery in the truest sense.
“Nothing, Boss,” his junior partner said, leaning against the doorway. “Forensics swept the whole place. No prints besides the victim’s. No forced entry. It’s like the killer was a ghost.”
Vance didn’t answer. He stopped in front of the stainless-steel refrigerator. Pinning a stack of take-out menus was a small, magnetic paper calendar.
Something about it caught his eye. Vance stepped closer, adjusting his glasses. Tomorrow’s date—September 16, 2026—was aggressively circled in thick, red permanent marker [Style Guide]. Inside the red circle, written in sharp, precise block letters, were four words:
SEE YOU TOMORROW, THOMAS.
Vance froze, the blood draining from his face. The killer hadn’t broken in to kill Arthur. Arthur was just the bait. The crime hadn’t even begun yet.