Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Christmas in Camelot | 2001 | Mary Pope Osborne | Buy |
| 2 | Haunted Castle on Hallows Eve | 2003 | Mary Pope Osborne | Buy |
| 3 | Summer of the Sea Serpent | 2004 | Mary Pope Osborne | Buy |
| 4 | Winter of the Ice Wizard | 2004 | Mary Pope Osborne | Buy |
| 5 | Carnival at Candlelight | 2004 | Mary Pope Osborne | Buy |
| 6 | Season of the Sandstorms | 2005 | Mary Pope Osborne | Buy |
| 7 | Night of the New Magicians | 2006 | Mary Pope Osborne | Buy |
| 8 | Blizzard of the Blue Moon | 2006 | Mary Pope Osborne | Buy |
| 9 | Dragon of the Red Dawn | 2007 | Mary Pope Osborne | Buy |
| 10 | Monday with a Mad Genius | 2007 | Mary Pope Osborne | Buy |
| 11 | Dark Day in the Deep Sea | 2008 | Mary Pope Osborne | Buy |
| 12 | Eve of the Emperor Penguin | 2008 | Mary Pope Osborne | Buy |
| 13 | Moonlight on the Magic Flute | 2009 | Mary Pope Osborne | Buy |
| 14 | A Good Night for Ghosts | 2009 | Mary Pope Osborne | Buy |
| 15 | Leprechaun in Late Winter | 2010 | Mary Pope Osborne | Buy |
| 16 | A Ghost Tale for Christmas Time | 2010 | Mary Pope Osborne | Buy |
| 17 | A Crazy Day with Cobras | 2010 | Mary Pope Osborne | Buy |
| 18 | Dogs in the Dead of Night | 2011 | Mary Pope Osborne | Buy |
| 19 | Abe Lincoln At Last! | 2011 | Mary Pope Osborne | Buy |
| 20 | A Perfect Time for Pandas | 2012 | Mary Pope Osborne | Buy |
| 21 | Stallion by Starlight | 2013 | Mary Pope Osborne | Buy |
| 22 | Hurry Up, Houdini! | 2013 | Mary Pope Osborne | Buy |
| 23 | High Time for Heroes | 2014 | Mary Pope Osborne | Buy |
| 24 | Soccer on Sunday | 2014 | Mary Pope Osborne | Buy |
| 25 | Shadow of the Shark | 2015 | Mary Pope Osborne | Buy |
| 26 | Balto of the Blue Dawn | 2016 | Mary Pope Osborne | Buy |
| 27 | Night of the Ninth Dragon | 2016 | Mary Pope Osborne | Buy |
The Merlin Missions send Jack and Annie on more challenging adventures at the request of the wizard Merlin, raising the stakes and complexity beyond the original Magic Tree House books. The quests take them to new historical periods and introduce more fantasy elements, including magical challenges and mythological creatures.
With twenty-seven books, the Merlin Missions series gives growing readers room to stay with characters they love while encountering stories that match their developing reading skills.