The Mysterious Island

Count Andre Dakkar (Lionel Barrymore) considers himself a scientist and rules his island as a benevolent leader. He creates submarines to search for a suspected underwater civilization. His daughter Sonia falls in love with engineer Nicolai Roget. Despotic ruler Baron Falon disapproves of the mixing of the classes. With revolution brewing in the Kingdom of Hetvia, Falon seizes the island and hopes to use the research submarine vessels as weapons. The Count and Sonia face torture. Nicolai returns with the first submarine to rescue them. Under attack, they are forced deeper and deeper until they discover the sea people.

The Jazz Singer was released two years earlier. This is still mostly silent with a few scenes with sound. It's also an early colored film but I didn't see that print. The TCM showing looks black and white. It is loosely adapted from Jules Verne. It faced a long production as film technology started to change. The story is high adventure. There are miniatures, creatures, and midget sea people. It is the fun of simple thrills.