All Episode in Season 21

1. Lord Lucan, World's Greatest Drag Racer and Lighthouse Lifesaver 2. Frightening Foo Fighters, Bird's Eye Spy and Coral Castle Mystery 3. Titanic Baker, Psychic Scammer and Cuban Swimmer Crisis 4. Ghost of Katie King, Lake Erie Monster and Secret Stowaway 5. Killer Space Germs, The Yeti's Hand and The Bug That Changed History 6. Murder at Greystone, Paulding Light and Tumbleweed Tycoon 7. Skyscraper Seance, Frozen Woman and Black Widow 8. Doppelgangers, Salem's Curse and White House Attack 9. Knocking Ghost, Superman Saves the Day and Sleeping Dragon 10. Ball of Mystery, Dark Side of the Moon and Fakespeare 11. Ancient Alien, Killer's Curse and Ground Zero Ship 12. Buffalo Bill Burial Riddle, First Dino Egg and Arctic Murder Mystery 13. Geostorm Inferno, The Typo That Won the War and The Death of Princess Di

Season List

Mysteries at the Museum Specials Mysteries at the Museum Season 1 Mysteries at the Museum Season 2 Mysteries at the Museum Season 3 Mysteries at the Museum Season 4 Mysteries at the Museum Season 5 Mysteries at the Museum Season 6 Mysteries at the Museum Season 7 Mysteries at the Museum Season 8 Mysteries at the Museum Season 9 Mysteries at the Museum Season 10 Mysteries at the Museum Season 11 Mysteries at the Museum Season 12 Mysteries at the Museum Season 13 Mysteries at the Museum Season 14 Mysteries at the Museum Season 15 Mysteries at the Museum Season 16 Mysteries at the Museum Season 17 Mysteries at the Museum Season 18 Mysteries at the Museum Season 19 Mysteries at the Museum Season 20 Mysteries at the Museum Season 21 Mysteries at the Museum Season 22 Mysteries at the Museum Season 23