Henry reveals surprising facts about scientific geniuses and future rivals Thomas Edison and Nikola Tesla.
Unknown facts about the American Revolution; stories of overlooked heroes; astonishing innovations; and heartbreaking tragedy.
Unknown facts about iconic the Hoover Dam; harrowing tales of the men who built it; ideas on how to protect it.
Marijuana's plant roots run deep in America and Henry digs up its long and complicated history; from its strange origins, to top-secret government programs.
Henry goes down the strange and sordid trail of currency in America ... from how bills were first printed, to why coins have ridges on them.
Henry Rollins mines for nuggets of truth about the California Gold Rush, during which hundreds of thousands of fortune seekers headed west to stake their claims, telling stories of greed, vigilante justice and secret societies.
Benjamin Franklin's lesser-known activities included owning slaves, visiting sex clubs, and being suspected of serial killing.
Secrets about Abraham Lincoln are revealed.
JFK's pre-presidency activities included a courier job in Nazi Germany, body building, and enjoying danger.
Controversial facts about J. Edgar Hoover are revealed including the first gay spy ring and sexual blackmail.
Little-known facts about the OK Corral, including the fact that the shootout did not actually occur there; Wyatt Earp's reputation as more of a pimp than a lawman; Doc Holliday's final fate.
Historian David Eisenbach reveals secret details about the private lives of Franklin and Eleanor Roosevelt, including FDR's long-running affair with his wife's secretary and Eleanor's relationship with a female news reporter.
Secrets about George Patton are uncovered, such as his dyslexia and his time as an international smuggler.
The notorious sadism of Caligula; how he walked on water, gambled to make Rome wealthy, and engaged in incest with his sisters.
Frank Sinatra; Dean Martin; Judy Garland.