Sam Polo

Bob Gilmore, a young clubman, is called by telephone to his home, where his parents are giving him a birthday party. He overhears one of the men guests make a slurring remark about his mother's appearance, and proceeds to punish him then and there, throwing the entire gathering into an uproar. Later in the evening he assumes guilt for a check which had been in reality forged by his foster father, in order to save the mother's feelings, but obtains a written confession from the guilty man for future use if necessary. Learning that he had been adopted from a foundling asylum in infancy, Bob decides to go to New York to see if he cannot learn his real name, which he understands begins with "Mor."

After crashing his plane in the wilderness, a young airborne forest ranger is nursed back to health by a mountain man and his pretty daughter in this 18-chapter serial from Universal.

The Bearcat, alias The Singin' Kid, crosses the Rio Grande into Three Pines, singing bloodthirsty verses, but in spite of these, he makes friends with Sheriff Bill Garfield and likewise with Alys May, daughter of cattle rancher John P. May, by saving her from a runaway. As a reward, he gets a job on the ranch and falls in love with Alys, though warned she is engaged to Aitken, her brother's college chum.

Hidden Dangers is a 1920 serial film.