This was the inspired choice of our producing director Kevin Mock, I believe.
Anyway, we wanted to do a spooky, Predator-style skulk-around-the-woods episode and at the 11th hour decided to have the Legends intersect with the crew of Supernatural.
From the beginning, we knew that we wanted to set an episode in modern-day Vancouver, because directly following the crossover that was all we could afford…
In our world Supernatural is a TV show, not a real thing.