Terra Australis, Operation Underworld and Heroine Hostess (S18E02)

S18E01 Ground Zero Flag, Space Suit and Pacific Codebreaker S18E02 Terra Australis, Operation Underworld and Heroine Hostess S18E03 Nuclear Nightmare, Teddy Roosevelt's Badlands Bandits And The Movie Star And The Dead Man S18E04 Jefferson's Wine, First High Flyer and Stefania's Thirteen S18E05 Alaska Highway, Tale of Beatrix Potter and Cleopatra's Needle S18E06 Benny's Banner, Lost for Words and Raising Chicago S18E07 Dishwasher, Golden Lake and Bridge Buster S18E08 Dippy the Dinosaur, Golden Record and Hooverball S18E09 Invention of the Doughnut, Cleopatra in a Carpet and Flight of Fancy S18E10 Real Life Lassie, Spy Who Went Cold and Sinking of the Andrea Doria S18E11 Million Dollar Dinner, Thing in the Woods and Cornstalk Colonel S18E12 Ping-Pong Diplomacy, Blazing Steamship Rescue and Death Ray S18E13 Battle of the Sexes, Circus Riot and Last Train to Freedom