Through original archival material, expert testimony and dramatic re-creations using CGI technology to place Theo E.J. Wilson in the scene, each episode challenges ideas of what really happened during some of the most pivotal moments in history.This season explores Abraham Lincoln's assassination; the Hindenburg disaster; the Salem witch trials; the death of Jesse James; the Oklahoma City bombing; the battle of Stalingrad; H.H. Holmes' murder spree during the 1893 Chicago World's Fair; the Chernobyl accident; the 1965 Bloody Sunday march from Selma to Montgomery; the 1986 space shuttle Challenger disaster; the 1889 catastrophic Johnstown flood in eastern Pennsylvania and the St. Valentine's Day massacre.