The Phantom Empire #12 The End Of Murania

When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface. The peaceful civilization of the Muranians is corrupted by the greed from above, and it becomes Autry's task to prevent all-out war, ideally without disrupting his regular radio show.

Gene saves the Queen and locks Argo and his men in the room with the death ray which gets out of control. With the end of Murania imminent the Queen refuses to leave. Gene and the others reach the surface where Gene must still face the murder charge.

Gene Autry - Gene Autry,
Frankie Darro - Frankie Baxter,
Betsy King Ross - Betsy Baxter,
Dorothy Christy - Queen Tika,
Wheeler Oakman - Lord Argo,
Charles K. French – Mal,
Warner Richmond – Rab,
J. Frank Glendon - Professor Beetson,
Smiley Burnette – Oscar,
Peter Potter – Pete,
Edward Peil Sr. - Doctor Cooper,
Jack Carlyle – Saunders,