It’s hard to believe but it’s true, it’s already time for the Sanctuary season 4 finale, and if the guest star is any indication, it’s going to be… BIG. WWE-sized BIG. This is episode about which we reported last month, featuring Edge aka Adam Copeland, and a really creepy eye effect.

As was ominously hinted at the end of the last episode, something is up (oh, sorry about that) in Hollow Earth, Praxis to be specific, and we can expect that to be bad news for our Sanctuarians, which generally means bad news for most of the planet.

The Sanctuary season finale, starring Amanda Tapping, Robin Dunne, Agam Darshi, and Christopher Heyerdahl, airs Monday, June 20 at 10/9c on Syfy.