About a year ago I often saw a Netflix series / film advertisement on YouTube that I actually found very interesting. It's about a father who sends his daughter to a hospital and then she disappears from there or is kidnapped. Do you know the name of it? In any case, it was a dark mystery series!
I think you mean Fractured.
Even if he doesn't mean Fractured, it is a highly recommended film with an extremely good storyline. Also very deep and gloomy, if you are looking for something like that
I watched the trailer from Fractured and yes it is, thanks!