Coming soon: The sheriff called him an evil genius. Fellow inmates called him Einstein. In January 2020, just 10 days before a shiny new Nashville jail was set to house its first inmate, a jail officer noticed two keys missing. What they didn't know is that Einstein had snuck into the jail at least 20 times while it was being built. He had stolen the two keys. If that's all he had accomplished in his stealth jail breaches, then we might never have heard of Einstein. But his plan was so much larger than that. His plan involved deadly weapons. This is Chasing Einstein, a four-part series from The Tennessean.