The Fugitive (1963)

S2E22 Moon Child

In the episode "Moon Child," Kimble finds himself in a small town plagued by a series of brutal murders targeting women, attributed to an unidentified serial killer. As a newcomer, he becomes the target of a vigilante mob that wrongly suspects him of being the murderer. Seeking refuge, Kimble takes shelter with Joanne Mercer, a young woman with learning difficulties known as a 'moon child.' She conceals him in her basement, which has an underground tunnel leading to an abandoned textile factory, the hideout of the actual killer lurking nearby.