The plot and action sequences of this serial are average for a latter-day Republic serial, but the nifty cast lifts it above the ordinary. Kirk "Superman" Alyn is very good in the action lead, Rosemary LaPlanche is fine as the heroine,and the dependable James Dale is a sturdy sidekick. In the villain's camp, the ubiquitous Roy Barcroft is superb, as always, and Carol Forman is menacing as the head of Underworld Inc., Nila. She also semi-reprises her role as The Spider Lady, in the Superman serial. Among the supporting cast are sometimes-serial lead Bruce Edwards (THE BLACK WIDOW), and James Craven. Marshal Reed and Tristam Coffin, who have both starred in other serials, have small parts as a police detective and a lawyer, respectively. As for the plot, which involves an Arab treasure, most of it is fairly standard stuff, but there is one unique (I think) twist that really comes as a surprise. This is a good serial, and Republic aficiandos should check it out.