Chris Watts described the moment his wife Shanann's eyes filled with blood when he murdered her in a bombshell letter he sent from prison.
The story of Shanann's brutal murder plays out in Netflix film American Murder: The Family Next Door, which documents how in 2018 Chris killed her after cheating on her, then took the lives of their two little girls Bella, four, and three-year-old Celeste.
Now a letter sent by the murderer from jail in Wisconsin details Shanann's final moments and also reveals that he had been planning to kill her for weeks.
He had previously told police that the murders weren't premeditated. Author Cheryln Cadle shares a series of letters and her one-on-one conversations with Watts in prison in her new book Letters From
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