The most important clue is the little sketch in the corner.
So, your logic says someone was playing FIFA, waved HI, and then dropped DEAD… Forget that logic and think back to what Helen told you before she gave you the note. In the simplest way possible, the letters must be converted into a phone number.
The solution is “6961894514,” with each letter corresponding to its position in the alphabet. A=1, B=2, and so on.
