The Fatal Flash

S1 E6: Adapted from the radio broadcast of May 26, 1938. At a steel plant, a vat of molten metal is overturned near the Hornet. At night he returns to inspect the secret laboratory where a powerful anti-aircraft bomb is being prepared for a foreign agent. When the Hornet tries to force the scientist in charge to reveal the identity of the master criminal, the man blows up the lab.