"starts off with a great, original idea—fresh, intriguing, and full of potential"

What Marielle Knows starts off with a great, original idea—fresh, intriguing, and full of potential. The story follows Marielle (Laeni Geiseler), a quiet teenager who, after a strange incident at school, suddenly starts experiencing everything her parents do. Every movement, every action—they become hers, whether she wants them or not.

At first, the film balances dark humor and drama well, keeping the audience engaged. But as it moves forward, it runs out of steam. The rhythm slows, the ideas seem to dry up, and instead of building towards something, it just drifts. What started as sharp and intriguing becomes repetitive, eventually settling into a lull that feels more like a bedtime story than a compelling narrative.

Frédéric Hambalek’s direction is solid, and the performances help carry the film—Julia Jentsch and Felix Kramer bring depth to Marielle’s parents, while Geiseler does a convincing job portraying a teenager overwhelmed by what she discovers. But despite strong acting, the film never fully delivers on its promise.

Visually, it sticks to a simple, naturalistic style that fits the suburban setting, but there’s nothing particularly striking to lift the story as it loses momentum. And as if the slow-paced final stretch wasn’t enough, the end credits roll to the sound of a lullaby.

In the end, What Marielle Knows is a film with a great setup but no real payoff. It starts strong but slowly drifts into something forgettable.