Himmler's Haunted Castle: Experts reveal the truth about the Nazi leader's Wewelsburg castle. Why did he want to keep it out of American hands? And what was his secret plan? (S1, ep 1)

Escape to the Wild Special: Tom Oar, Marty Meierotto, and Eustace Conway reveal what it takes to answer the call of the wild and tell the untold stories of their first winter.

Season after season, the mountain men are locked in an endless battle against winter: the most dangerous predator of them all. (S5, ep 17)

To Everything There Is A Season: Marty ends his season with a blockbuster catch, Tom stands his ground against a beast and Preston lays down roots for the next generation. (S6, ep 16)

Generations: Tom pays the price for two consecutive failed winters. Eustace and Preston harvest a hog and Rich makes a pick of the litter. (S5, ep 16)

Stand Your Ground: Morgan's horses go missing. Rich's lion hunt turns into an epic chase, and Tom goes after America's largest game. (S6, ep 15)

I'll Go Down Fighting: Tom scrambles a last minute bear hunt to save his season; Morgan fights for his future with fire; Eustace has an unexpected showdown. (S5, ep 15)

Race to Ruin: An early melt unleashes the bears weeks ahead of schedule in the Great Alaska Range. Eustace and Preston's race to the finish line ends in ruin. (S6, ep 14)

The Sting of Defeat: Tom washes out in Idaho and retreats to the Yaak; Eustace races to stop a breakout and Morgan battles predators large and small. (S5, ep 14)

High and Dry: Morgan slips up navigating the meltdown that's transforming the Alaskan wild, and Marty's hunt takes him to the top of Kodiak Island's most treacherous peaks. (S6, ep 13)