A man was murdered in his office.
The suspects are Gerry, Julie,Jason,Nick and Sophie.
The numbers 6,4,9,10,11 are written on the calendar with blood.
Who is the killer?
The numbers on the calendar represent months.
So the Killer is :
6 - June - J
4 - April - A
9 - September - S
10 - October - O
11 - November - N
So JASON is the Killer.