Factual error: The episode centers around a Dr. John R. Brinkley who in Oct 1917 performed surgery to insert goat testicles into people. The program states that the doctor broadcast on the radio to all 50 states. In 1917 the USA only had 48 states.
French Connection, Shipwrecked Gold, Area 51 Plane Crash - S2-E4
Factual error: The SS Central America's route is shown sailing through the Panama Canal on its route from SF to New York in the 1850s. Unfortunately the Panama Canal did not open until 1914.
Outlaw Marshal, 76 Days Adrift, Diamond Hoax - S6-E5
Factual error: In the story about Anna Hahn, a close-up is shown of a person being sworn in to testify in court. The Bible used is a Revised Standard Version. Ms. Hahn was tried in 1937. The RSV Bible's first edition was not published until 1946.
Peeping Butler, Beaver Bomb, Mother's Day Mother - S8-E8
Factual error: The founder of Mother's Day sees a sign in a lunch counter window advertising "Mother's Day Salad $5." That would be highly unlikely. Five Dollars in 1922 is the equivalent of $71.25 today. nobody would pay that for a salad - then or now. (00:18:50)
Fire in the Hull, the Gipper's Bombshell and Electric Tricycle - S15-E9
Factual error: It is stated that exhibits in the Pima Air and Space Museum include a 1964 F/A-18 Super Hornet used by the Blue Angels. The FA-18 Hornet did not enter service until 1983, and the Super Hornet did not enter service until 1999.