Sydney Sweeney, Ana de Armas, Daniel Brühl and Vanessa Kirby are also among the ensemble of this true-life thriller, about a 1920s German philosopher who starts a new life on an uninhabited island.

It would be completely understandable that Ron Howard, having directed more than two dozen genre-tripping films spanning six decades, would want to shake things up a bit by jumping into something outside his proven comfort zone.

But despite all the intriguing possibilities of the concept and a game, international cast including Jude Law, Ana de Armas, Vanessa Kirby, Daniel Brühl and Sydney Sweeney, Eden, handed its world premiere at Toronto, never finds its happy place. The prevailing overwrought tone lands more cartoonish than satirical, while a protracted running time accentuates the film’s deficiencies.

But the couple’s solitary existence is interrupted by the arrival of Heinz Wittmer (Brühl), a World War I vet with a younger new wife, Margaret (Sweeney), and a son, Harry (Jonathan Tittel). They have been following Ritter’s dispatches and hope the land’s virgin air might cure Harry’s tuberculosis, just as it appears to have kept Strauch’s multiple sclerosis under control.

Feeling less than hospitable, Ritter and Strauch glare at the newbies with their safari shorts and butterfly nets, figuring they won’t make it until the first rains.

But while the family prove surprisingly resilient, building a home for themselves and their soon-to-be newborn, their co-existence is freshly threatened by the entrance of the Baroness Eloise Bosquet de Wagner Wehrhorn (de Armas), accompanied by a pocket harem of young men, who intends to build the world’s most exclusive resort on the rocky terrain.

Despite an inspired setup that might suggest Werner Herzog’s Gilligan’s Island, Howard and screenwriter Noah Pink (Tetris) shipwreck the Queensland-shot vehicle in a mishmash of styles. Neither quite satire nor thriller nor murder mystery, the film cries out for a sharper attack.

It’s the kind of tale that would have been a natural fit for the likes of Mike White, whose acutely devious White Lotus sensibility would have been right at home here. But although Howard delivers some effective set pieces, notably a harrowing sequence in which Margaret must deliver her own baby, little about Eden feels consistent.

As a result, the performances are likewise hit and miss. De Armas does the best she can with her femme fatale role, even though she ultimately lacks the satirical chops of a more seasoned character actress to really hit it home.