Alex Baber is a self-taught investigator from rural West Virginia who claims to have solved a case that’s defeated the world’s best cryptographers for half a century: the identity of the Zodiac killer. Baber used AI to interpret the coded notes the serial killer left behind and, in the process, made another startling discovery. This podcast was brought to you thanks to the support of readers of The Times and The Sunday Times. Subscribe today: http://thetimes.com/thestory Guest: Josie Ensor, chief US reporter, The Times. Host: Manveen Rana. Producers: Emily Webb. We want to hear from you - email: thestory@thetimes.com Clips: Paramount Pictures. Photo: Getty Images. Read the best of our journalism: https://www.thetimes.com/ Listen live to Times Radio: https://www.thetimes.com/radio/live Subscribe to The Times and The Sunday Times YouTube channel: https://www.youtube.com/subscription_center?add_user=timesonlinevideo Find us on Facebook: https://www.facebook.com/timesandsundaytimes/ Find us on X: https://x.com/thetimes Find us on Instagram: https://www.instagram.com/thetimes/