Cillian Returns is the thirteen episode of season 13 of The New Scooby-Doo Movies.
Following of the events of Harley's Solo Adventure, The Mystery Inc sees a mysterious girl which is turns out to be Cillian Darcy in Sydney Australia during their vacation when Daphne, Velma and Fred are kidnapped by the mysterious Shadow King. Now Shaggy and Scooby will team up with Cillian for one final mystery.
|Will Forte||Shaggy Rogers|
|Grey DeLisle-Griffin||Daphne Blake|
|Kate Micucci||Velma Dinkley|