Master Key, a creation of the Harry “A” Chesler publishing company, doesn’t wear a costume. He sticks to his dapper civilian wardrobe. Master Key, also known as Ray Cardell, was zapped through a telescope by some oddball ray, and it gave him the power of x-ray vision and also the power to zap people with that ray. Ray and his ray, you might say.
This episode, from Scoop Comics #2 (1942) has the usual set of spies trying to do in the hero. They make the mistake many villains make. They create a deathtrap. When exactly, in movies or serials or pulps or comic books does a deathtrap work? Never, I think.
No credits from the Grand Comics Database for an artist or writer.