The killer is Jason.
Each number is the first letter of the corresponding first letter of each month i.e ‘Jason’ = 6 - the sixth month of the year
So 6=J (June) 4=A (April), 9=S (September), 10=O (October)and 11=N (November).
Each number is the first letter of the corresponding first letter of each month i.e ‘Jason’ = 6 - the sixth month of the year
So 6=J (June) 4=A (April), 9=S (September), 10=O (October)and 11=N (November).