Naked City (1958)

S01E15 The Manhole

Title: The Manhole Plot: An aging sewer technician discovers that his son is the head of a local gang. In a desperate plea, he tries to persuade him to change his ways, but to no avail. Heartbroken, he informs the authorities about his son’s involvement. After the gang makes a hasty retreat through the sewers following a jewel heist, the father, determined to confront his son, ventures into the dark tunnels in pursuit of them.