A glittering jewelry convention at the Desert Inn attracts many buyers and sellers to the dazzling array of pricey gems... as well as some cunning thieves who plan to rob a wealthy Sheik of his collection of valuable rubies. When Tanna gets drawn into the case, he encounters a seductive woman who may be involved in the caper. 

A serial rapist appears to be targeting contestants of the "Miss Casino" beauty pageant. A description of the suspect is of some help, but with the attacker still loose, Tanna reluctantly allows his assistant Bea to act as bait to try to nab the assailant.