Because there are only 25 possible keys, Caesar ciphers are very vulnerable to a “brute force” attack, where the decoder simply tries each possible combination of letters.

Although Bernard has not been able to crack the code, Lukas implements some intriguing techniques, including the Caesar shift, to decipher Quinn's letter. The Caesar Shift Method To Decode Ciphers ...

The cipher B-2 wouldn't even be a shift; it would simply be A=1, B=2, ... Z=26, so that's the first thing that bothered me. Also, the first two numbers the announcer calls are 12 and 11, which for ...