The team investigates the secret presidential codes of Thomas Jefferson and how
they may be partially responsible for the death of one of the world's greatest
explorers, Meriwether Lewis, of Lewis and Clark fame. Meltzer discovers that
although the Lewis family has been working for 15 years to exhume his body, the
National Parks is preventing the exhumation. This episode attempts to answer why
the federal government would want to keep the body buried against the family's
wishes and what really happened to the man who more than 200 years after his
death remains our most iconic explorer.