After 17 years, Terry Gilliam’s “The Man Who Killed Don Quixote” has finally turned the corner from cursed film project to completed movie, a historic and improbable milestone that has many people asking, “Is it really true?” One of the most troubled productions in the history of cinema, the project has been tormenting Gilliam for more than 25 years, since he first started tinkering with a screenplay adaptation in 1991.

Read More: Cannes 2016: Terry Gilliam on ‘Continual Failure’ and ‘The Man Who Killed Don Quixote’

Despite several false starts over the years, Gilliam never bought into the idea that the project was doomed. “The curse is bullshit,” he said during an interview with IndieWire at the Cannes Film Festival in 2016, a year that also marked the 400th anniversary of the death of “Don Quixote” writer Miguel de Cervantes.

Starring Adam Driver, Jonathan Pryce, Stellan Skarsgard and Olga Kurylenko, the film tells...