Không phải lúc nào bạn cố gắng cũng thành công nhưng phải luôn cố gắng để không hối tiếc khi thất bại. (Khuyết danh)
Unit 1: The North Star
Unit 2: The Fossil Hunters
Unit 3: Dressed to Excess
Unit 4: The Butler’s Bad Day
Unit 5: A Bet
Unit 6: Amazing Komodo Dragons
Unit 7: Greek Magical Papyri
Unit 8: Watch Out!
Unit 9: Dangerous Bites
Unit 10: The Avalanche
Unit 11: The Lydian King
Unit 12: The Butler
Unit 13: The End of Smallpox
Unit 14: The Coward’s Lesson
Unit 15: Epidemic in Zimbabwe
Unit 16: The Brute and the Billionaire
Unit 17: The Tenacious Inventor
Unit 18: The Nurse’s Lesson
Unit 19: Seizures Then and Now
Unit 20: The Greedy Bee
Unit 21: The Mayor of Sherman
Unit 22: The Editor’s Choice
Unit 23: The Ice House
Unit 24: Preparing of the Future
Unit 25: Hundred Plays
Unit 26: The Kidnapping
Unit 27: The Earl of Shining
Unit 28: The Lord and the Farmers
Unit 29: The Shortcut
Unit 30: The Mad Hatter