Nora becomes convinced that Dean is the one writing the letters to scare the family into selling the house, especially after discovering his financial struggles and a mysterious video of a girl with pigtails in their bedroom.
The episode ends with the contractors discovering a hidden, Prohibition-era tunnel in the basement. Dean and Nora find evidence that someone has been living there, and the episode closes with them chasing a mysterious figure through the passage.
The real-life Broaddus family (the inspiration for the Brannocks) reportedly remained a united front. The subplot of Nora suspecting Dean of being "The Watcher" was created for dramatic tension. The Watcher s01e05
Ellie discovers a Facebook group for former students of an English teacher named Roger Kaplan , who used to have his students write "love letters" to houses. This makes Roger a primary suspect for the origins of the Watcher's poetic and creepy writing style. Fact vs. Fiction
Real-world investigators did find female DNA on one envelope, but it did not lead to an arrest or a breakthrough in the case. Deep Dive Resources Nora becomes convinced that Dean is the one
To dive deeper into the mystery and the real-life events that inspired it, check out these sources:
In real life, there were no secret tunnels found under 657 Boulevard. The real-life Broaddus family (the inspiration for the
'The Watcher' Season One, Episode 5 Recap: 'Occam's Razor”