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.

Thanks for listening to Last Seen Alive. I'm your host, Leah, crime analyst by day, and true crime storyteller by night.

And as always, I'm your co. Scott. This is the revisited and enhanced edition of one of our early episodes, which features the Unsolved Homicide of Diana Robertson.

The original edition was recorded in 2020,

and we've revisited and re-recorded an episode on her case in 2025. As I'm sure those of you who've been listening since the early days of Last Seen Alive have noticed, our production and audio

quality have improved significantly over the years. Lately, we've been working on remaking our earlier episodes.

When we originally recorded them, we were doing the best we knew how at the time.

However, our best wasn't the best, and we've learned a lot since then.

We want to honor those victims by telling their stories with the production quality they

deserve.

So we've been completely remaking all of our early episodes, including this one.

With that being said, onto Diana's story.

A quick heads up.

In addition to the murder of human victims, this episode includes the killing of a pet.

We won't go into any graphic detail, but still, please listen with care.

Diana Robertson was last seen alive on December 12, 1985.

She was 21 years old at the time and lived in Puyallup, Washington.

On the morning of December 12th, she ventured into the woods in Mineral, Washington,

a tiny town about an hour and 20 minutes south of Puyallup,

with her family. The three of them, Diana, her 36-year-old boyfriend Michael, and their two-year-old

daughter, Crystal, were on a festive mission to locate the perfect Christmas tree. With the holiday

...