Overview: Event: MISSISSIPPI VALLEY 1605 Sydney's graduate student Adam Grant unearths a lead on the never found but most famous of all Native American artifacts: the legendary Eyes of Toklamanee. Adam's research takes him and Sydney to St. Louis, Missouri, and to the construction site of the city's newest subway line. With a archeologist to verify that construction won't destroy anything of historical significance, it looks like the lead is a dead end.