W & Little D 02
On the Trail of Evil I had just gotten to my car when a text came into my phone. It was from Sis and said simply, “Burner Fibonacci 20 Single.” It wouldn’t take the Agency more than a few minutes to figure out that code, but first the message had to be sent to the proper people. That meant I had about five minutes to make the call. The code, which I had taught Sis many years ago, was simple. A Fibonacci sequence is a mathematical structure where the next number is the sum of the previous two numbers. Single meant to only use the final part of each number. Usually I use it to create a semi-random long number that I can easily remember, like for a password. In this case, Sis was using …