Warning: This article contains spoilers forThe Watcher.

Between the slayings, we see John eating a sandwich and washing it down with a glass of milk.

He was arrested in 1989, convicted and sentenced to five life terms in prison.

The Watcher; Insurance executive John List was sought by police on suspicion of murder after the bodies of his wife, mother, and three teenaged children were found shot dead in his Westfield, New Jersey, home.

‘The Watcher’ episode 3 murder sequence involving John Graff (Joe Montello) is based on the real John List family murders of 1971.Netflix; Bettmann/Getty

He died in 2008 as a result of complications from pneumonia.

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The Watcher

Naomi Watts and Bobby Cannavale in ‘The Watcher.'.Netflix