Dick Powell's Zane Grey Theatre (1956)
S18E11 Full Circle (3)
Episode Overview
A spider bite leads to a drastic shift in Romana's behavior. At the same time, the Doctor learns that the spaceship's inhabitants are caught in an endless cycle of maintenance and enhancements. He grapples with ethical dilemmas when he encounters the chief scientist, who is preparing to conduct horrific experiments on the live marshchild while it remains fully aware.