Serious answer: prediction markets. People bet on the time of death of the victim. The person that bets the closest to the actual time of death wins. A would be assassin would theoretically always know the exact moment of the attempt on this persons life.
Serious answer: prediction markets. People bet on the time of death of the victim. The person that bets the closest to the actual time of death wins. A would be assassin would theoretically always know the exact moment of the attempt on this persons life.