Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Christmas in Camelot | 2001 | Magic Tree House | Buy |
| 2 | Haunted Castle on Hallows Eve | 2003 | Magic Tree House | Buy |
| 3 | Summer of the Sea Serpent | 2004 | Magic Tree House | Buy |
| 4 | Winter of the Ice Wizard | 2004 | Magic Tree House | Buy |
| 5 | Carnival at Candlelight | 2004 | Magic Tree House | Buy |
| 6 | Season of the Sandstorms | 2005 | Magic Tree House | Buy |
| 7 | Night of the New Magicians | 2006 | Magic Tree House | Buy |
| 8 | Blizzard of the Blue Moon | 2006 | Magic Tree House | Buy |
| 9 | Dragon of the Red Dawn | 2007 | Magic Tree House | Buy |
| 10 | Monday with a Mad Genius | 2007 | Magic Tree House | Buy |
| 11 | Dark Day in the Deep Sea | 2008 | Magic Tree House | Buy |
| 12 | Eve of the Emperor Penguin | 2008 | Magic Tree House | Buy |
| 13 | Moonlight on the Magic Flute | 2009 | Magic Tree House | Buy |
| 14 | A Good Night for Ghosts | 2009 | Magic Tree House | Buy |
| 15 | Leprechaun in Late Winter | 2010 | Magic Tree House | Buy |
| 16 | A Ghost Tale for Christmas Time | 2010 | Magic Tree House | Buy |
| 17 | A Crazy Day with Cobras | 2010 | Magic Tree House | Buy |
| 18 | Dogs in the Dead of Night | 2011 | Magic Tree House | Buy |
| 19 | Abe Lincoln At Last! | 2011 | Magic Tree House | Buy |
| 20 | A Perfect Time for Pandas | 2012 | Magic Tree House | Buy |
| 21 | Stallion by Starlight | 2013 | Magic Tree House | Buy |
| 22 | Hurry Up, Houdini! | 2013 | Magic Tree House | Buy |
| 23 | High Time for Heroes | 2014 | Magic Tree House | Buy |
| 24 | Soccer on Sunday | 2014 | Magic Tree House | Buy |
| 25 | Shadow of the Shark | 2015 | Magic Tree House | Buy |
| 26 | Balto of the Blue Dawn | 2016 | Magic Tree House | Buy |
| 27 | Night of the Ninth Dragon | 2016 | Magic Tree House | 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.