Season Four

The Depths

Sanctuary (411) - The Depths
Download:

A quest to capture a legendary Abnormal in Bolivia leaves Will and Magnus injured and trapped in a cave-in, where they confront truths about themselves and their relationship; Henry records video letters to a special someone while working on an invention. (TV Guide)

U.S. air dates are in MM.DD.YY form.   U.K. air dates are in DD.MM.YY form.