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September 29, 2025 48 mins

When a young family ventures into a remote Washington forest in search of the perfect Christmas tree, a dark mystery unfolds. Parents go missing, a child is found wandering alone in another town and all of Washington state wonders whether a serial predator may be waiting in the woods in this episode of Last Seen Alive.

If you know anything about the deaths of Diana Robertson and Michael Riemer, please contact the Lewis County Sheriff’s Office at 360-748-9286.

See photos from this episode and check out the sources we used to research it here:  

https://lastseenalivepodcast.com/2020/10/15/unsolved-homicide-diana-robertson/

Support LSA and the DNA Doe Project by getting a shirt or hoodie on our store:

https://last-seen-alive.printify.me/products

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