Mark Merlin meets two Plutonian explorers who have brought a giant space bird to Earth, and then the bird goes berserk.; Larry's theater is about to close down when he decides to mount a fourteenth-century play by a cursed playwright. The play is a success but the curse seems to have taken hold of Larry.; Two explorers searching for a vast radium deposit encounter an amnesiac man with super-powers and enlist him to help them retrieve the radium.