#1
Chapter Book · Ages 7–10 · 2009
A mysterious invitation leads to a thrilling adventure at Mouseford Academy.
#2
Chapter Book · Ages 7–10 · 2009
A group of mice embark on a journey to save their friend's sheep from a mysterious illness.
#3
Chapter Book · Ages 7–10 · 2010
Five mouse friends embark on a treasure hunt to uncover the secrets of the Jade Princess's lost treasure.
#4
Chapter Book · Ages 7–10 · 2010
A group of mice embark on a journey to find the Secret City of the Incas.
#5
Chapter Book · Ages 7–10 · 2010
A group of mice solve a mystery involving a stolen fashion collection in Paris
#6
Chapter Book · Ages 7–10 · 2011
A group of mice must solve a mystery and save their friend's father from a villainous rat.
#7
Chapter Book · Ages 7–10 · 2011
A lunar trip turns chaotic with spaceship wrecks and rebellious robots.
#8
Chapter Book · Ages 7–10 · 2011
A pizzeria faces threats in NYC. Can the Thea Sisters save it in time?
#9
Chapter Book · Ages 7–10 · 2011
Can the Thea Sisters stop the explosive threat to Alaska's ecosystem?
#10
Chapter Book · Ages 7–10 · 2012
A friend vanishes in Scotland. Can the Thea Sisters unravel Celtic mysteries to find her?
#11
Chapter Book · Ages 7–10 · 2012
Thea Sisters race against thieves to find Egypt's legendary treasure.
#12
Chapter Book · Ages 7–10 · 2012
A group of mice travel to India to help their friend Ashvin with a problem involving monkeys and a stolen emerald.
#13
Chapter Book · Ages 7–10 · 2012
Can the Thea Sisters stop a daring heist on the Orient Express?
#14
Chapter Book · Ages 7–10 · 2013
A ballet competition in Italy hides a sinister plot. Can the Thea Sisters uncover the truth?
#15
Chapter Book · Ages 7–10 · 2013
A hula festival on a volcano's edge. Can they warn everyone in time?
#16
Chapter Book · Ages 7–10 · 2013
A group of mouse friends solve a mystery involving a stolen fan and a treasure hidden by their ancestor.
#17
Chapter Book · Ages 7–10 · 2013
A lion cub is kidnapped on safari. Can they save him?
#18
Chapter Book · Ages 7–10 · 2014
A botanist vanishes in Holland, linked to a black tulip mystery.
#19
Chapter Book · Ages 7–9 · 2014
A chocolate factory's future is at risk. Is it sabotage?
#20
Chapter Book · Ages 7–10 · 2014
A missing actor threatens a Greek play. Can the Thea Sisters save the show?
#21
Chapter Book · Ages 7–10 · 2015
A group of mouse friends try to solve a mystery involving a stolen ring and a skating competition.
#22
Chapter Book · Ages 7–10 · 2015
A pirate map leads to a treasure hunt in the Bahamas, but rivals lurk.
#23
Chapter Book · Ages 7–10 · 2016
A stolen film reel threatens a Hollywood movie. Can the Thea Sisters solve the mystery?
#24
Chapter Book · Ages 7–10 · 2016
Endangered animals in Madagascar need saving. Can they be rescued in time?
#25
Chapter Book · Ages 7–10 · 2017
Five mice race against time to find a missing author in icy Iceland.
#26
Chapter Book · Ages 7–10 · 2017
A thief lurks in Venice's Carnival. Can the Thea Sisters unmask him in time?
#27
Chapter Book · Ages 7–10 · 2018
A friend vanishes in Canada. Can they unravel the mystery at Niagara Falls?
#28
Chapter Book · Ages 7–10 · 2018
Uncover a scam at an ancient dig site.
#29
Chapter Book · Ages 7–10 · 2019
A mysterious saboteur threatens a London play. Can the Sisters save the show?
#30
Chapter Book · Ages 7–10 · 2019
A stolen clock, a ticking deadline. Can they solve the mystery?
#31
Chapter Book · Ages 7–10 · 2020
Can the Thea Sisters solve a mystery before the Summer Olympics begin?
#32
Chapter Book · Ages 7–10 · 2020
A group of mice travel through Malaysia and get caught up in a mystery involving a timber smuggler.
#33
Chapter Book · Ages 7–10 · 2021
Five friends embark on a road trip along Route 66 to present their video games at a competition in California.
#34
Chapter Book · Ages 7–10 · 2021
A holiday in Rome turns into a thrilling mystery for the Thea Sisters.
#35
Chapter Book · Ages 7–9 · 2022
A missing mural threatens an art show. Can they solve the mystery in time?
#36
Chapter Book · Ages 7–9 · 2023
A missing skeleton in New Zealand leads to a thrilling mystery.
#37
Chapter Book · Ages 7–10 · 2024
A mysterious adventure awaits in Ireland. Can friendship solve the puzzle?
#38
Chapter Book · Ages 7–10
A thrilling mystery unfolds in Paris. Can friendship solve it?
