Season 4
Episodes
1 Woolly Mystery, Lost Nazi Gold Train and The Plot to Kill the Pope Mar 10, 2021 2 Serial Mourner, Ground Zero Flag and Jefferson's Wine Mar 17, 2021 3 Mysterious Lord Lucan, Lecce Labyrinth and Wicked Stepmother Mar 24, 2021 4 Black Widow, Lost Inca City and Genius Syndrome Mar 31, 2021 5 Death of Princess Di, Titanic Hustle and Fish Oddity Apr 7, 2021 6 Glacier Inferno, Sea Serpent Cecil and Boogie Bomb Apr 14, 2021 7 Gangster Frankenstein, Oregon Desert Mystery and Ghost Girls Apr 21, 2021 8 Operation Fantasia, Jolly Jane and Parting of the Red Sea Apr 28, 2021 9 The Girl Who Fell to Earth, Challenger Disaster and Centennial Bulb May 5, 2021 10 Hitler Diaries, Cliff Palace and Project Azorian May 12, 2021 11 Bloody Benders, LA Raid and Tully Monster May 19, 2021 12 Dueling Mammoths, Stanford Prison Experiment and MIT Blackjack May 26, 2021 13 Demise of the Dodo, Disappearance of Glenn Miller and Terror in the Sky Jun 2, 2021 14 Beast of Bodmin, The Day Niagara Shut Off and Hitler in Hollywood Jun 9, 2021