Ynez Seabury

A scientist becomes murderous after discovering, and being exposed to the radiation of, a powerful new element called Radium X.

Angela and Bob Brooks are an upper-class couple. Unfortunately, Bob is an unfaithful husband, but Angela has a plan to win back her husband's affections.

Champion Roman racer Dan Malloy falls in love with French Canadian Marie LeFarge, but is accused of killing her father. He evades the law until he wins the Calgary Stampede. He is freed when the real killer is identified.