Cousin Casey welcomes the mice to the first world series of baseball. Casey introduces them to his friend Joey, whose father is the team's pitcher Fast Ball McFall. But there's bad news: Fast Ball is in a slump. Fast Ball assures his son he'll pull out of it, especially since he has his lucky four leaf clover. Unfortunately, the manager for the opposing team knows that Fast Ball is very superstitious, so he makes sure the pitcher's lucky piece disappears....

Elementary my dear Watson.. er.. Alexander. Arthur Conan Doyle's priceless manuscript for The Hound of the Baskervilles is missing! Was it burned as the ashes in the fireplace might indicate? Was it stolen and the half burned page merely a ruse to send our sleuths off the track? And what are the petals from a rare rose doing in Mr. Doyle's study when there are no flowers in the room? The mice help their cousin Sherlock and his friend Amy, with the...

Emily and Alexander travel to Washington D.C. to visit their cousin Archie, whose best friend, Theodore Roosevelt, Jr. lives in the White House! The mice learn that President Roosevelt's horse, Cyclone, is his most prized possession. Unfortunately, when Ted Jr. accidentally leaves the stall door open, Cyclone disappears. Meanwhile, a shifty rat is busy impersonating a Mouse White House historian. But wait a minute: he doesn't know that Betsy Ross...

Moscow Circus is in danger of being closed down! A string of thefts all over the city have two things in common: jewelry is being stolen out of high rooms although the doors are locked from the inside, and each theft has occurred while the circus is in progress.

When Emily and Alexander go to visit their cousin Nikos in Crete they discover trouble at an excavation site. Someone is stealing the priceless artifacts!

Emily and Alexander arrive in Pamplona just in time for the Fiesta, but not everyone is in a party mood. Cousin Carmen's friend Rosa is very worried. She is afraid her father, El Matador, is going to get hurt in the bull ring.

Our mice are happily watching the first Tour de France bicycle race as well as cheering their cousin "Rocket Renaud" in the first Tour de Cheese. Renaud's friend Olivier Bonnidee is worried: his father must win the Tour de France or they could lose their winery to the greedy banker, Monsieur Grossnez. The mice soon discover that Mr. Grossnez's well placed thumb tacks have forced Olivier's father into last place. Meanwhile, Renaud is preparing to race...

Emily and Alexander arrive on the Yucatan Peninsula of Mexico where they meet cousin Xoc and his friend Wendy. She is the daughter of archaeologist Edward Thompson who has uncovered the Mayan ruins of Chichen Itza. When Alexander gets off the boat he accidentally bumps into some mice workers and is covered head to toe with flour. The workers bow to him believing he is Caban- the moon goddess! When she appears, she steals the moon from the sky! Mr....

As the camels plod slowly across the desert, cousin Siri tells Emily and Alexander she is very worried about the drought plaguing her country. All the oases are drying up and the search for the legendary oasis has proven futile.

Count Zeppelin is about to launch his new Zeppelin airship skyward and Emily and Alexander are along for the ride. Visiting their cousin Fritz and his friend Leni, Zeppelin's granddaughter, our mice learn how this fascinating invention works.