One cipher he sent, cracked by a couple, read, “I like killing people because it is so much fun. It is more fun than killing wild game in the forest because man is the most dangerous animal of all to kill.”
However, Mann wants to pump the brakes on both killers possibly being the same person, noting, “One of the things we have to be careful about is confirmation bias.
“So if you already think that your killer is also the Zodiac killer, and then you find, ‘Oh look, here’s the Zodiac Hotel,’ you know, that’s confirmation bias and that’s something we have to be careful about.”
Former FBI profiler, Julia Cowley, is also in Mann’s corner, claiming the differences between Short’s murder and the Zodiac’s crimes are major.