In “Chicken Heart,” the most famous episode of Arch Oboler’s 1930s radio series, “Lights Out,” scientists in Chicago keep a chicken’s heart alive indefinitely—but when a careless lab visitor breaks open the heart’s container, the heart begins to spread … and spread … and spread.
“For some reason I cannot even imagine, this tissue is doubling in size every hour,” one savant tells the authorities. “Do you know what that means? In another hour it will be twice the size it is now, and long before that it will break open the building with the force of its pressure. And then it will be free in the streets—do you hear me, free in the streets! And then those tentacles of protoplasm