Mysteries at the Museum – Zodiac Killer special

Here are three promos from the Zodiac Killer special episode of Mysteries at the Museum, a popular show on the Travel Channel: Description: In the late 60s and early 70s, the San Francisco Bay area was terrorized by a killer…

What is Zodiac’s 340-character cipher?

Earlier this month I gave a talk about Zodiac’s unsolved 340-character cipher at the annual convention of the American Cryptogram Association in Hendersonville, NC. It is full of things I’ve learned over the years about the cipher. My goal was…