A person is found murdered in his office. When the crime scene is investigated, the police finds out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects of the murder, Paul, Nina, Anna and Lee. Can you find out who is the murderer?

Find The Killer Riddle

Anna

The numbers written on the calendar actually represents the months in the calendar whose initial letter represents the name of the killer.
4 – April (A)
11 – November (N)
11 – November (N)
4 – April (A)

Thus the killer is Anna.