Aman was murdered in his office. the suspects are gerry, julie, jason, nick and sophie. the number 6,4,9,10, 11 are written on calendar with blood. who
is the killer?

A man was murdered in his office. The suspects are gerry, julie, jason, nick and sophie. The number 6,4,9,10, 11 are written on calendar with blood. The correct answer is JASON.

In calendar, 
6 - June
4 - April
9 - September
10 - October
11 - November

When you add all the initials, you'll get JASON.