Upside Mystery Legacy

Upside Mystery Legacy is an upcoming American fantasy mystery film produced by MGM Animation Studios and Spyglass Media Group, with animation set to be provided by Cinesite. The film is directed by Eric Darnell from a screenplay by Jeff Gunn, William Schifrin and Ray DeLaurentis, and will feature the reprised voices of John Travolta, Christian Slater, and Michelle Rodriguez, with Kate McKinnon and Olivia Newton-John joining the cast. It will be the fourth and final installment in the Upside Mystery franchise. This film will be dedicated to Olivia Newton-John, who died on August 8, 2022, from breast cancer.

The film is set to be released in the United States on July 7, 2023, by United Artists Releasing.

Premise
Hans Truman retired in San Paradise from searching at mysteries, but Jason Truder and Stella Lee received the last mystery from the Upside Mystery headquarters, convincing Truman to come out from his retirement on a terrifying last mystery.

Cast

 * John Travolta as Hans Truman, a retired detective.
 * Christian Slater as Jason Truder, Hans Truman's best friend.
 * Michelle Rodriguez as Stella Lee, a spy agent who is Hans Truman's love interest.
 * Kate McKinnon as TBD (confirmed to be voicing the main antagonist)
 * Olivia Newton-John as TBD. This will be Newton-John's final role as she completed recording her lines before her death in August 2022.

Production
To be added

Release
Upside Mystery Legacy will be released on July 7, 2023, taking over the release date of Madame Web. It'll be shown in RealD 3D, Dolby Cinema, and 4DX formats.

Marketing
MGM's official YT channel released a teaser trailer on August 3, 2022, and was released in front of Hailey in theaters.