F.P.1. Doesn’t Answer
The earliest available feature film based on a modern sci-fi novel, this German 1932 melodrama concerns the then outlandish idea of a floating gas station for transatlantic flights. Filmed in three different languages with different casts, it’s not exactly a neglected masterpiece, but with talent like Curt Siodmak, Hans Albers, Charles Boyer, Peter Lorre, Conrad Veidt and Sybille Schmitz, it’s certainly a forgotten sci-fi gem. 6/10