Pinkie Pie starts the silliest criminal investigation in the history of Equestria when a cake she is guarding for a contest is destroyed on the way to Canterlot.
On January 27, 2011, Lauren Faust wrote premises for this episode (originally titled "Marzipan on the Canterlot Express"), Ponyville Confidential (originally titled "Pony Confidential"), and an early version of Magic Duel.
Amy Keating Rogers wrote the full outline on February 18, 2011. She revised it on March 4, then wrote the first full script on March 30. Revisions were made to the script from April 5 through May 10. Voice recording began on May 12.
On June 23, 2011, this episode was re-titled "MMMystery on the Friendship Express".
The full animatic was submitted for review on August 10, 2011.
The first fully animated version was submitted for review on December 7, 2011.
Production was officially complete on February 17, 2012.
This episode features the following characters:
DVDs with this episode:
Princess Twilight Sparkle
(April 30, 2013)
(May 14, 2013)