5 Huge Movies That Were Secretly Filmed Under Completely Different Titles

Return of the Jedi was filmed as a fake horror movie called Blue Harvest

To avoid price gouging from vendors and unwanted attention from fans and press, the 1983 Star Wars sequel shot under the cover title Blue Harvest, complete with the fake tagline "Horror Beyond Imagination." Cast and crew wore Blue Harvest hats and T-shirts, and catering trucks were branded with the fake title instead of Star Wars.

The Dark Knight filmed under the title Rory's First Kiss

Christopher Nolan's Batman sequel shot under the deliberately unglamorous working title Rory's First Kiss — the kind of name nobody would show up to photograph with a telephoto lens. Nolan has used similarly innocuous decoy titles across several of his other films.

Avengers: Endgame was filmed as "Mary Lou" — and shot multiple fake endings

Infinity War and Endgame shot under the cover titles Mary Lou and Mary Lou 2, with two separate scripts in circulation on set — a real one and a decoy. The Russo brothers reportedly filmed as many as five different fake endings for Endgame specifically to throw off leaks.

Spider-Man: Homecoming shot as Summer of George — a Seinfeld reference

The 2017 Spider-Man reboot filmed under the title Summer of George, a nod to a classic Seinfeld episode. Its sequel followed the joke through to Fall of George — a fittingly low-key cover for one of the biggest franchises in Hollywood.

Harry Potter and the Chamber of Secrets filmed in London as Incident on 57th Street

During its London location shoots, the second Harry Potter film operated under the deliberately misleading working title Incident on 57th Street — a name with no connection to Hogwarts, the UK, or anything in the actual story, chosen purely to keep curious fans away from set.