The Zero Hour (Rod Serling) | Desperate Witness, Chapters 3-4

This week is The Zero Hour (with host Rod Serling), with chapters 3 & 4 of their story, Desperate Witness. July 27 will bring the final chapter of the story.

There are vastly different dates for The Zero Hour episodes, so I'm not going to give any date, but I believe this aired close to the end of 1973 (some sites say 1974).

Story by Kenneth Fearing; a study of deadly obsession. Cast: Richard Crenna, Keenan Wynn, and Julie Adams.