: Calendar Mysteries / 01~13 Full Set (Book+CD)
: Calendar Mysteries 01 / January Joker (Book+CD)
: Calendar Mysteries 02 / February Friend (Book+CD)
: Calendar Mysteries 03 / March Mischief (Book+CD)
: Calendar Mysteries 04 / April Adventure (Book+CD)
: Calendar Mysteries 05 / May Magic (Book+CD)
: Calendar Mysteries 06 / June Jam (Book+CD)
: Calendar Mysteries 07 / July Jitters (Book+CD)
: Calendar Mysteries 08 / August Acrobat (Book+CD)
: Calendar Mysteries 09 / September Sneakers (Book+CD)
: Calendar Mysteries 10 / October Ogre (Book+CD)
: Calendar Mysteries 11 / November Night (Book+CD)
: Calendar Mysteries 12 / December Dog (Book+CD)
: Calendar Mysteries 13 / New Year's Eve Thieves (Book+CD)