The late Professor Grayson, an authority on ancient Mayan weaponry, was the only man who could have implicated Dr. Maldor in the assassination attempt on J.C. Henley. However, the professor's grandson is also an expert on Mayan weapons, and he is eager to assist in the case. Gail Richards is sent in a chartered plane to deliver the weapon to the young scholar, but the Scarab has a plan to make sure that Gail never reaches her destination! (1944 - Republic Pictures)
