Covered Tracks

Covered Tracks (Verwehte Spuren) is a 1938 German historical drama film directed by Veit Harlan and starring Kristina Söderbaum, Philip Dorn, and Charlotte Schultz. It was shot at the EFA Studios in Berlin's Halensee and the Bavaria Studios in Munich with location shooting taking place in both cities as well as in Paris. The film's sets were designed by the art directors Karl Haacker and Hermann Warm. It premiered at the Venice Film Festival.

Plot summary
A young woman named Séraphine checks into a Parisian hotel with her ailing mother, having arrived to attend the 1867 International Exposition. When she comes back to the hotel with her mother's medication, she finds their room vacant and none of the staff remembers ever seeing her or her mother checking into the hotel. Séraphine then embarks on a quest to uncover the mystery of her mother's disappearance and prove her own sanity.