Night Beat - Night Is A Weapon
While Randy is visiting a local library at closing time, the librarian, who is an old friend, causes a patron to go into a crazed panic attack when she dims the lights to signal closing time.
Later, Randy finds the man buying a gun and babbling about how he is going to kill a man -- a man who is trying to drive him crazy with darkness.
Quirky story that is typical of many episodes in this series.
Featuring: Frank Lovejoy, Jan Morgan (no other cast credits given)
Original Air Date: February 13, 1950 on NBC
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Photo: Frank Lovejoy