J.J. Allen

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.

An extramarital affair leads to a young couple contracting venereal disease.