Numbers!
Riddle: A man is found murdered in his office. The suspects are Peter, Julie, Jason, Molly, and Brian. In the office is a calendar with the numbers 6,4,9,10,11 written in blood. Who is the killer?
Answer: Jason is the killer. The numbers indicate months and the first letter of each month spells the name of the murderer, e.g. the 6th month is June and the first letter of June is J, the 4th month is April and the first letter of April is a, and so on.
Source: https://www.riddles.com/index.php/10600
