Watch Perils of Thunder Mountain (1919) : Full Movie Online Free The uncle of John Davis, killed on the mountains, leaves a will directing that Davis and his cousin, Hawke Morgan, shall be joint guardians of his adopted daughter, Ethel, and receive each a share in a valuable gold mine, the location of which is indicated on a map left, with the will, a certain proportion going to various charities. Hawke Morgan comes out West, and determines to get rid of Davis, and so acquire not only the entire fortune but also the girl who is in love with Davis. He at once sets out to accomplish the murder of Davis, and every stage of the story is packed with exciting adventure, the hero and heroine going through amazing adventures before their final happiness is secured.