Reminds me of the Charles Bronson movie “The Mechanic.” Jan-Michael Vincent kills Bronson and comes back home to pick up a car. But there’s a note in the car:
“Steve, if you’re reading this it means I didn’t make it back. It also means you’ve broken a filament controlling a 13-second delay trigger. End of game. Bye! You’re dead.”
Boom.
LOL!