Isle of Sunken Gold

Isle of Sunken Gold (1927) is a 10-episode serial that's mostly lost. Only 1/3rd of it is known to exist and that's the middle part. Episodes 4 to 6 + half of chapter 7, so one get right in the middle of the action without build-up or conclusion. While it's no complete experience, it's a fun treasure hunt with all types of weird things going on. So looked like a cool serial. Too bad it's not complete.