In 1977, Shayna Glassman's father lived in apartment 6E at 35 Pine Street in Yonkers, N.Y. His direct upstairs neighbor was a young postal worker named David Berkowitz.

In the Netflix docuseries, “Conversations With a Killer: The Son of Sam Tapes” (now streaming), director/ producer Joe Berlinger explores David Berkowitz and his reign of terror on 1970s New York City — and even includes the killer’s claim that he wasn’t the culprit who shot one of his surviving victims, Wendy Savino.